6 When a rubber ball is dropped it hits the floor and bounces. Design an investigation to determine how the temperature of the rubber ball affects the maximum height the ball reaches after it bounces. In your answer, refer to . how to change the temperature of the ball the variables that need to be controlled how to obtain high-quality data

Answers

Answer 1

As the temperature is increased, the maximum height that the ball reaches is decreased.

What is an experiment?

We know that an experiment would have to have an independent variable and a dependent variable. The independent variable is the variable that we would have to change as the reaction is taking place. The dependent variable is variable that is altered as we effect changes in the dependent variable.

Having said that, we can see that in the reaction that we are carrying out here, the temperature of the rubber ball is the independent variable while the maximum height the ball reaches after it bounces is the dependent variable. This would help us to be able to know what happens in the experiment that has been described.

The increase in the temperature would cause the gases to expand and the ball would no longer move very high again.

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Related Questions

A person pulls a box across the floor with a rope. The rope makes an angle of 40 degrees tot he horizontal, and a total of 125 newtons of force is applied. How much work is done if the box is pulled for 25 meters?

Answers

Answer:

The angle formed of the rope with the surface = 40°

Force applied = 125Newtons

The displacement covered by the box =25metres

W= FDcos theta

[125×40×cos(40°) ] Joules

= [ (3125×0.76604444311)]Joules

= 2393.88888472 joules(ans)

Hope it helps

Pls help! Tysm!!! :D

Answers

Answer:

Slowing a bike by applying the brkaes is an xmaple of acceleration

Explanation:

What materials are difficult to charge because electrons easily flow through them?

Answers

Answer:

Conductors

Explanation:

distance travelled/time taken gives?

Answers

Answer:

speed

Explanation:

Speed = distance travelled/time taken

Answer: Speed

Explanation:

Speed is defined as the rate of change of the position of an object in a direction. The speed of an object is calculated as the distance travelled divided by the time that is taken.

Speed is regarded as a scalar quantity since it has only direction but doesn't have magnitude. The answer to the above question is speed.

what is conductivity?​

Answers

Answer:

Conductivity is the measure of the ease at which an electric charge or heat can pass through a material. A conductor is a material that gives very little resistance to the flow of an electric current or thermal energy.

Explanation:

brainliest plss

What is the period of a wave that completes 3 waves in 2 seconds?

Answers

P = 3÷2

= 1.5

Explanation:

hope it helps

A bar magnet is held in place while another bar magnet is placed near it. The second bar magnet spins around and
attaches to the first magnet on one end. Which statement is correct about the energy stored in the magnetic field?
(1 point)
O The increase in the energy stored in the system is proportional to the increase in kinetic energy.
O The decrease in the energy stored in the system is proportional to the decrease in kinetic energy.
O The increase in the energy stored in the system is proportional to the decrease in kinetic energy.
O The decrease in the energy stored in the system is proportional to the increase in kinetic energy.

Answers

Answer:

o

Explanation:

the increase energy stored in thw system is proportional to the decrease in kinetic energy

The increase in the energy stored in the system is proportional to the decrease in kinetic energy.

What is energy stored in the system ?

"The energy stored in the system means the sum of energies of both magnets when second magnet stop spin and stick with first magnet. It is clear that the rotational kinetic energy of second magnet decrease and becomes part of the system. Hence the increase in the energy stored in the system is proportional to the decrease in kinetic energy."

What is kinetic energy ?

"Kinetic energy is a form of energy that an object or a particle has by reason of its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy."

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It takes 24 hours for _______?


a.Earth to circle the sun one time

b.earth to rotate on its axis one time

c. The sun to circle earth one time

d.the sun to rotate on its axis one time

Answers

Answer:

C

Explanation:

Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 minutes, and 4 seconds with respect to other, distant, stars. Earth's rotation is slowing slightly with time; thus, a day was shorter in the past. This is due to the tidal effects the Moon has on Earth's rotation.

Answer: the answer is b.

ps: the other answer is wrong, the earth rotates around the sun, and the sun doesn't rotate around the earth.

Explanation:

A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first block as shown in the figure. (a) Construct free-body diagrams for each block. (b) Identify the horizontal force that causes the block of mass m to accelerate. (c) Assume that the upper block does not slip on the lower block, and find the acceleration of each block in terms of m and F.

Answers

By Newton's second law, assuming F is horizontal,

• the net horizontal force on the larger block is

F - µmg = 3mA

where µmg is the magnitude of friction felt by the larger block due to rubbing with the smaller one, µ is the coefficient of static friction between the two blocks, and A is the block's acceleration;

• the net vertical force on the larger block is

4mg - 3mg - mg = 0

where 4mg is the mag. of the normal force of the surface pushing up on the combined mass of the two blocks, 3mg is the weight of the larger block, and mg is the weight of the smaller block;

• the net horizontal force on the smaller block is

µmg = ma

where µmg is again the friction between the two blocks, but notice that this points in the same direction as F. It is the only force acting on the smaller block in the horizontal direction, so (b) static friction is causing the smaller block to accelerate;

• the net vertical force on the smaller block is

mg - mg = 0

where mg is the magnitude of both the normal force of the larger block pushing up on the smaller one, and the weight of the smaller block.

(You should be able to draw your own FBD's based on the forces mentioned above.)

(c) Solve the equations above for A and a :

A = (F - µmg) / (3m)

a = µg

If you build a circuit with 3 D batteries, what is the voltage of the circuit?

A) 3 volts
B) 4.5 volts
C) 3 Amps
D) 4.5 Ohms

Answers

Answer:

a

Explanation:

Answer:

d

Explanation:

Violet light (410 nm) and red light
(685 nm) pass through a diffraction
grating with d = 3.33 x 10-6 m. What is
the angular separation between them
for m = 2?

Answers

Answer:10.03

Explanation:acellus

Explain the difference between the speed of an Electromagnetic wave and its frequency?

Answers

Answer:

Electromagnetic waves differ in their wavelengths and frequencies. The higher the frequency of an electromagnetic wave, the greater its energy. The speed of an electromagnetic wave is the product of its wavelength and frequency, so a wave with a shorter wavelength has a higher frequency, and vice versa.

Explanation:

A man rides a bike along a straight road at a constant speed for 5 minmin, then has a flat tire. He stops for 5 minmin to repair the flat, but then realizes he cannot fix it. He continues his journey by walking the rest of the way at a constant speed, which takes him another 10 min.

Required:
Use the particle model to draw a motion diagram of the man for the entire motion described here. Number the dots in order, starting with zero.

Answers

Use the particle model to drawl a motion diagram

Which ones are correct??

Answers

Answer:

blanket:thermal conductivity

as it conduct heat.

aquarium glass:transparency

as light can be transfered from one side to

another.

3. A dog walks 12 meters to the east and then 16 meters back to the west.
For this motion, what is the distance moved?
What is the magnitude and direction of the displacemeni?

Answers

Answer:

[tex]distance = 16 + 12 \\ = 28 \: meters \\ \\ displacement = {}^{ + } 12 + {}^{ - } 16 \\ = - 4 \: meters \\ magnitude = > |s| = 4 \: meters[/tex]

By how many times would the gravitational force between two objects decrease if the distance between the two objects was tripled?

Answers

Answer:

If the separation distance between any two objects is tripled (increased by a factor of 3), then the force of gravitational attraction is decreased by a factor of 9 (3 raised to the second power).

A sound has a higher pitch than a bell. Which quantity must also be higher in this sound than in the bell?
O amplitude
O frequency
O wavelength
O speed

Answers

Answer:

frequency

Explanation:

The frequency must also be higher in this sound than in the bell because for high pitch the frequency must be high.

What is the frequency?

It is defined as the number of waves that crosses a fixed point in one second, known as frequency. The unit of frequency is per second.

We have:

A sound has a higher pitch than a bell.

As we know, the sound has a high pitch if the vibration frequency is high, and a low pitch if the vibration frequency is low.

Thus, the frequency must also be higher in this sound than in the bell because for high pitch the frequency must be high.

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Tritium and helium-3 have the same number of nucleons, but tritium has one proton and two neutrons whereas helium-3 has two protons and one neutron. Without doing a calculation, decide which nucleus has a greater binding energy. Explain. (Select all that apply.)

a. This happens in part because the tritium nucleus has greater Coulombic repulsion.
b. This happens in part because the helium-3 nucleus has greater Coulombic repulsion between nucleons.
c. This happens in part because the tritium nucleus has an extra neutron enhancing the nuclear forces.
d. Helium-3 is more stable.
e. This happens in part because the helium-3 nucleus has fewer neutrons.
f. Tritium is more stable.

Answers

Answer:

Tritium is more stable.

This happens in part because the tritium nucleus has an extra neutron enhancing the nuclear forces.

Explanation:

The binding energy is the energy that holds nucleons together in the nucleus. It depends on the number of nucleons present in the nucleus. The greater the number of nucleons, the greater the binding energy.

Also, the more the number of neutrons in a nucleus, the greater the nuclear forces. Helium-3 has only one neutron while tritium has two neutrons. The extra neutron in tritium enhances the nuclear forces hence tritium has a greater binding energy than Helium-3

Tritium is more stable.this happens in part because the tritium nucleus has an extra neutron enhancing the nuclear forces.

What is binding energy?

The binding energy is the energy that holds nucleons together in the nucleus. It depends on the number of nucleons present in the nucleus.

The greater the number of nucleons, the greater the binding energy.Also, the more the number of neutrons in a nucleus, the greater the nuclear forces.

Helium-3 has only one neutron while tritium has two neutrons. The extra neutron in tritium enhances the nuclear forces hence tritium has greater binding energy than Helium-3

Thus tritium is more stable.this happens in part because the tritium nucleus has an extra neutron enhancing the nuclear forces.

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You have a 6.00 V power supply, and
a 30.0 ohm and a 75.0 ohm resistor.
Find the current flowing out of the
battery if the resistors are connected
in parallel.

Answers

Answer: 0.28 A

Explanation:

Answer:

.28

Explanation:

Acellus

Select all the correct answers.
What happens when a ray of light moves from alr to water?

Its speed changes.
its color changes.
Its direction changes.
It's absorbed by water.​

Answers

Answer:

it changes it's direction

Explanation:

When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction. When light enters a more dense substance (higher refractive index), it 'bends' more towards the normal line

Answer:

Hope this helps!

Explanation:

When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction. When light enters a more dense substance (higher refractive index), it 'bends' more towards the normal line.

what's is the best definition of AVERAGE SPEED?​

Answers

Answer:

The average speed is the distance travelled divided by the time taken: Average speed=Distance travelledTime taken.

An initially uncharged sphere is on an insulated stand and isolated in a chamber. The charge on the sphere is monitored as a beam of monochromatic light shines on the sphere. Initially nothing happens. The wavelength of the light is slowly decreased. When the wavelength reaches a certain value, a positive charge is suddenly measured on the sphere. The wavelength is then held constant, and the charge continues to increase at a constant rate. The intensity of the beam is then increased without the wavelength being changed, and the rate of increase of the charge becomes greater.

Required:
a. In a coherent paragraph-length response, describe the cause of the charge on the sphere and the changes in the observations about the charge, in terms of physics principles.
b. An electron in the chamber is moving with speed 2×10^5m/s when it collides with a positron (a particle identical to an electron except for the sign of its charge) moving with the same speed in the opposite direction. The particles annihilate each other. How much energy is released due to the annihilation?
c. In another experiment, a beam of electrons with uniform wavelength λe is incident on a slit, where the width of the slit is much larger than λe. A detector is placed near the slit, but no diffraction pattern is observed. What change should be made that would result in a diffraction pattern? Indicate why this change is the one needed.

Answers

Answer:

a)   E = K + Φ, b)  ΔE = 1.64 10⁻¹³ J.,  c)    λ = a

Explanation:

a) In this case it is an example of the photoelectric effect that was correctly described by Einstein assuming that the light ray is composed of a series of particles called photons, each one with an energy given by the Planck equation

        E = h f

         c = λ f

         

substituting

          E = h c /λ

We can see from this equation that as the wavelength of the ray decreases the energy of each photon increases, the moment arrives that the energy is sufficient to remove an electron from the sphere, thus leaving an unbalanced positive charge, this description explains why the positive charge appears on the sphere; the minimum wavelength to remove an electron is

           E = K + Φ

if K = 0

           E =Φ

where fi is the work function of the material.

When the intensity of the ray increases according to Eintein's description, the number of photons increases, so if the number of photons increases, the number of shocks and the number of electrons expelled increases, therefore the unbalanced positive charge also increases.

b) the energy released in collision is the sum of the energy of each particle

   

for the electron

          E = K + m c² = (pc) ² + (m c²) ²

where the moment is

          p = γ m u

          γ = [tex]\sqrt{1- (\frac{u}{c})^2 }[/tex]

          γ = [tex]\sqrt {1- ( \frac{2 \ 10^5}{3 \ 10^8 })^2 } = \sqrt{1- (6.67 \ 10 ^{-4)^2 }[/tex]

          γ ≅ 1

in this case since the speed of the particles is much less than the speed of light,

            E = (m u) ² + (m c²) ²

            E = m² (u² + c²)

            E = 9.1 10⁻³¹ [(2 10⁵) ² + (3 10⁸) ²

            E = 9.1 10⁻³¹   9 10¹⁶

            E = 8.2 10⁻¹⁴ J

the positron has an energy of equal magnitude, so when the two particles annihilate the energy change is

            ΔE = 2E

            ΔE = 2 (8.2 10⁻¹⁴)

            ΔE = 1.64 10⁻¹³ J.

c) the expression that describes the diffraction process is

            a sin θ = m λ

            sin  θ = m λ/ a

where a is the width of the slit and m in diffraction order

The greatest value that the sine function can have is 1

               1 = m λ / a

               λ = a / m

therefore we can see that to see the diffraction phenomenon the width of the slit must be greater than or equal to the wavelength

A Thomson's gazelle can run at very high speeds, but its acceleration is relatively modest. A reasonable model for the sprint of a gazelle assumes an acceleration of 4.2m/s2 for 6.5s , after which the gazelle CONTINUES at a steady speed.

a. What is the gazelles top speed?
b. A human would win a very short race with a gazelle. The best time for a 30 m sprint for a human runner is 3.6 s. How much time would the gazelle take for a 30 m race?

Answers

Answer:

The correct answer will be:

(a) 27.3 m/s

(b) 3.8 s

Explanation:

According to the question:

Acceleration,

[tex]a= 4.2 \ m/s^2[/tex]

Time,

[tex]t = 6.5 \ s[/tex]

(a)

The gazelles top speed will be:

⇒  [tex]V_{max} = at[/tex]

             [tex]=4.2\times 6.5[/tex]

             [tex]=27.3 \ m/s[/tex]

or,

             [tex]= 27 \ m/s[/tex]

(b)

As we know,

s = 30 m

Now,

⇒  [tex]s = \frac{1}{2} at^2[/tex]

or,

⇒  [tex]t=\sqrt{\frac{2s}{a} }[/tex]

On putting the given values, we get

       [tex]=\sqrt{\frac{2\times 30}{4.2} }[/tex]

       [tex]=\sqrt{\frac{60}{4.2} }[/tex]

       [tex]=3.78 \ s[/tex]

or,

       [tex]=3.8 \ s[/tex]

What is hydrometer? Describe its use and any one type of hydrometer.​

Answers

Answer:

An instrument for measuring the density of liquids.

Explanation:

A hydrometer is an instrument used to determine specific gravity. It operates based on the Archimedes principle that a solid body displaces its own weight within a liquid in which it floats. Hydrometers can be divided into two general classes: liquids heavier than water and liquids lighter than water.

Thermohydrometers is one type of hydrometer.

A thin film of acetone (n=1.25) lies on the surface of a thick piece of water (n=1.30). White light shines down from air onto the thin layer of acetone. Destructive interference occurs for m=3 for a wavelength in air of 600 nm. What is the thickness of the thin film?

Answers

Answer:

Explanation:

The wave of light is being reflected two times while going from lower to higher refractive index mediums

So there will be phase reversal two times .

Condition of destructive index

2 μ t = ( 2m+1) λ / 2

Substituting the values

2 x 1.25 x t = ( 2 x 3 + 1 ) x 600nm / 2

2.5 t = 2100 nm

t = 840 nm .

(1) Viewers of Star Trek hear of an antimatter drive on the Starship Enterprise. One possibility for such a futuristic energy source is to store antimatter charged particles in a vacuum chamber, circulating in a magnetic field, and then extract them as needed. Antimatter annihilates with normal matter, producing pure energy. What strength magnetic field is needed to hold antiprotons, moving at 5.0 x 10^7 m/s in a circular path 2.00 m in radius? Antiprotons have the same mass as protons but the opposite (negative) charge.
(2) Is this field strength obtainable with today’s technology or is it a futuristic possibility?

Answers

Solution :

The relationship between the strength of magnetic field and the radiusof a charged particle's path is obtained through Newton's second law, which is given by :

F = ma

F = qvB and [tex]$a=\frac{v^2}{r}$[/tex]

Substituting these values in the second law of Newton,

[tex]$qvB=\frac{mv^2}{r}$[/tex]

Now solving for B, we get:

[tex]$B = \frac{mv}{rq}$[/tex]

  [tex]$=\frac{(1.67 \times 10^{-27})(5 \times 10^{7})}{2\times 1.6 \times 10^{-19}}$[/tex]

 = 0.261 T

The field strength can be obtained by using the technology of today.

Calculate the energy, wavelength, and frequency of the emitted photon when an electron moves from an energy level of -3.40 eV to -13.60 eV.

Answers

Answer:

(a) The energy of the photon is 1.632 x [tex]10^{-8}[/tex] J.

(b) The wavelength of the photon is 1.2 x [tex]10^{-17}[/tex] m.

(c) The frequency of the photon is 2.47 x [tex]10^{25}[/tex] Hz.

Explanation:

Let;

[tex]E_{1}[/tex] = -13.60 ev

[tex]E_{2}[/tex] = -3.40 ev

(a) Energy of the emitted photon can be determined as;

[tex]E_{2}[/tex] - [tex]E_{1}[/tex] = -3.40 - (-13.60)

           = -3.40 + 13.60

           = 10.20 eV

           = 10.20(1.6 x [tex]10^{-9}[/tex])

[tex]E_{2}[/tex] - [tex]E_{1}[/tex] = 1.632 x [tex]10^{-8}[/tex] Joules

The energy of the emitted photon is 10.20 eV (or 1.632 x [tex]10^{-8}[/tex] Joules).

(b) The wavelength, λ, can be determined as;

E = (hc)/ λ

where: E is the energy of the photon, h is the Planck's constant (6.6 x [tex]10^{-34}[/tex] Js), c is the speed of light (3 x [tex]10^{8}[/tex] m/s) and λ is the wavelength.

10.20(1.6 x [tex]10^{-9}[/tex]) = (6.6 x [tex]10^{-34}[/tex] * 3 x [tex]10^{8}[/tex])/ λ

λ = [tex]\frac{1.98*10^{-25} }{1.632*10^{-8} }[/tex]

  = 1.213 x [tex]10^{-17}[/tex]

Wavelength of the photon is 1.2 x [tex]10^{-17}[/tex] m.

(c) The frequency can be determined by;

E = hf

where f is the frequency of the photon.

1.632 x [tex]10^{-8}[/tex]  = 6.6 x [tex]10^{-34}[/tex] x f

f = [tex]\frac{1.632*10^{-8} }{6.6*10^{-34} }[/tex]

 = 2.47 x [tex]10^{25}[/tex] Hz

Frequency of the emitted photon is 2.47 x [tex]10^{25}[/tex] Hz.

Part D- Isolating a Variable with a Coefficient In some cases, neither of the two equations in the system will contain a variable with a coefficient of 1, so we must take a further step to isolate it. Let's say we now have • 30 + 4D = 5 • 2C + 5D = 2 t to None of these terms has a coefficient of 1. Instead, we'll pick the variable with the smallest coefficient and isolate it. Move the term with the lowest coefficient so that it's alone on one side of its equation, then divide by the coefficient. Which of the following expressions would result from that process?
1. D= 5/4 - 3/4C
2. C= 5/3 - 4/3D
Part E- Now that you have one of the two variables in Part D isolated, use substitution to solve for the two variables. You may want to review the Multiplication and Division of Fractions and Simplifying an Expression Primers. Enter the answer as two numbers (either fraction or decimal), separated by a comma, with C first.

Answers

Answer:

D)     D = [tex]\frac{5}{4} - \frac{3}{4} \ C[/tex], E)  (C, D) = ( [tex]\frac{17}{7}, \ \frac{-4}{7}[/tex]

Explanation:

Part D) two expressions are indicated

          3C + 4D = 5

          2C +5 D = 2

let's simplify each expression

         3C + 4D = 5

         4D = 5 - 3C

we divide by 4

            D = [tex]\frac{5}{4} - \frac{3}{4} \ C[/tex]

The other expression

       2C +5 D = 2

       2C = 2 - 5D

        C = [tex]1 - \frac{5}{2} \ D[/tex]

we can see that the correct result is 1

Part E.

It is asked to solve the problem by the substitution method, we already have

          D =  [tex]\frac{5}{4} - \frac{3}{4} \ C[/tex]

we substitute in the other equation

            2C +5 D = 2

             2C +5 (5/4 - ¾ C) = 2

we solve

            C (2 - 15/4) + 25/4 = 2

             -7 / 4 C = 2 - 25/4

             -7 / 4 C = -17/4

              7C = 17

               C = [tex]\frac{17}{7}[/tex]

now we calculate D

               D = [tex]\frac{5}{4} - \frac{3}{4} \ \frac{17}{7}[/tex]

               D = 5/4 - 51/28

               D =[tex]\frac{35-51}{28}[/tex]

               D = - 16/28

               D = [tex]- \frac{4}{7}[/tex]

the result is (C, D) = ( [tex]\frac{17}{7}, \ \frac{-4}{7}[/tex] )

What did Europeans, africans and Americans trade as a result for the Colombian exchange

A. Railroad engineering ideas

B. Computer technology

C. Film production techniques

D. Agricultural knowledge

Also under the subject I meant to put social studies not physics.

Answers

Answer: Railroad engineering ideas

Four passengers with combined mass 250 kg compress the springs of a car with worn out shock absorbers by 4.00cm when they enter it. Model the care and passengers as a single body on a single ideal spring. If the loaded has a period of vibration of 1.08 s, what is the period of vibration of the empty car?

Answers

Answer:

The time period of the empty car will be "1.00 s".

Explanation:

The given values in the question will be:

Mass,

m = 250 kg

Loaded car's time period will be:

T = 1.08 s

Shock absorbers compression,

x = 4 cm

or,

  = 0.04 m

Now,

Weight of passengers will be:

⇒  [tex]F=mg[/tex]

         [tex]=250\times 9.8[/tex]

         [tex]=2450 \ N[/tex]

The spring constant of shock absorbers will be:

⇒  [tex]k=\frac{F}{x}[/tex]

        [tex]=\frac{2450}{0.04}[/tex]

        [tex]=61.250 \ N/m[/tex]

As we know,

Time period, [tex]T = 2 \pi\sqrt{\frac{M}{k} }[/tex]

On substituting the values, we get

                   [tex]1.08=2\pi \sqrt{\frac{M}{61250} }[/tex]

                  [tex]\frac{M}{61250}=0.02955[/tex]

                      [tex]M=0.02955\times 61250[/tex]

                           [tex]=1809.6 \ kg[/tex] (Total mass of car as well as its passengers)

Now,

The mass of the empty car will be:

⇒  [tex]m'=M-m[/tex]

          [tex]=1809.6-250[/tex]

          [tex]=1559.6 \ kg[/tex]

hence,

The time period of empty car will be:

⇒  [tex]T'=2\pi\sqrt{\frac{m'}{k} }[/tex]

         [tex]=2\pi\sqrt{\frac{1559.6}{61250} }[/tex]

         [tex]=2\pi \sqrt{0.0254}[/tex]

         [tex]=1.003 \ s[/tex]

or,

         [tex]=1.00 \ s[/tex]

Other Questions
Venus filium, Aeneam", amavit, itaque magnum lovem (Jupiter, acc. sing.) de fatoAeneae* rogavit. Iuppiter* tum dixit, "Dea, noli timere*, Fata* immota manebunt. Tuusfilius erit tutus, et Aeneae* imperium perpetuum donabo."Translate paragraph from latin to english Please help!!!Select the correct answer Question 7 of 10These box plots show daily low temperatures for a sample of days in twodifferent towns.Degrees (F)Which statement is the most appropriate comparison of the spreads? Need help with these Spainsh true or false question Bob's gift shop sold a record number of cards for Mother's Day. One salesman sold 24cards, which was 20% of the cards sold for Mother's Day. How many cards were soldfor Mother's Day? Circle the letter of the words that express a relationship most like the relationship of the pair of words in CAPITAL LETTERSNOMADIC: WORKERSA. cultivated : ploughedB. cattle : ranchC. permanent : farmersD. wandering : traveling Who was the first country to make contact with the Congo Kingdom? Clarissa is a high school football referee. She recently won the referee of the year award for her state for her consistent excellence. She applied to referee university games and her application was denied. She was told by the head of referees that it was not proper to have women as referees and that the men on the teams would not respect her, leading to chaos on the field. Clarissa is the victim of Decide if the following statement is valid orinvalid.If you live in Miami, then you live in Florida.Jada lives in Florida, so she lives in Miami.ValidInvalid what is the difference between matrix and shoma? PLS HELP!! GIVING BRAINLIEST!! :((Ian Uses The Rule Add 1/2 Then Multiply By 2 Starting From 0 BRAINLIEST FOR THE RIGHT ANSWER! PLEASE HELP! Which of the following was the most important outcome of Gutenbergs printing press?the creation of movable type using steel instead of woodthe production of written materials for the massesthe finalization of the 26 letter English alphabetthe first printings of the Bible to be distributed to common people PLEASE HELP DUE SOONDescribe one piece of evidence that supports the big bang theory. Bob walks 8/10 of a kilometer to school each day. How many kilometers does bob walk to school in 5 days ? I have a question that has already been answered. I just need someone to please explain the steps.Find the coordinates of the minimum point of the function- f(x) = x^2 + 4x - 5.Solution-We need to express x^2 + 4 - 5 in the form (x+h)^2 + k.Let x^2 - 4x = (x - 2)^2 - 4 (Where did the -4 come from?) x^2 + 4x - 5 = [ (x - 2)^2 - 4] - 5 = (x - 2)^2 - 9All I wanna know is where the -4 came from. what rule must be applied. Which path would the laser take when entering the water from air? brown or black can someone help? please explain how to do it and get it right (i will give brainliest to best answer) Why are air pollution levels in Mexico City significantly greater than in other areas of Mexico??A. The city is sparsely populated.B. The city is situated at a low altitude.C. The city is surrounded by mountains.D. The city is located far from major waterways. Steve and Stephanie Pratt purchased a home in Spokane, Washington, for $575,000. They moved into the home on February 1 of year 1. They lived in the home as their primary residence until June 30 of year 5, when they sold the home for $927,500. (Leave no answer blank. Enter zero if applicable.)a. What amount of gain on the sale of the home are the Pratts required to include in taxable income?Recognized gainb. Assume the original facts, except that Steve and Stephanie lived in the home until January 1 of year 3 when they purchased a new home and rented out the original home. They finally sell the original home on June 30 of year 5 for $927,500. Ignoring any issues relating to depreciation taken on the home while it was being rented, what amount of realized gain on the sale of the home are the Pratts required to include in taxable income?Recognized gainc. Assume the same facts as in part (b), except that the Pratts lived in the home until January of year 4 when they purchased a new home and rented out the first home. 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