Answer:
At temperatures above 32°F (0°C), pure water ice melts and changes state from a solid to a liquid (water); 32°F (0°C) is the melting point. For most substances, the melting and freezing points are about the same temperature.
Calculate Kinetic Energy The potential energy of a swing is 200 J
at its highest point and 50 J at its lowest point. If mechanical
energy is conserved, what is the kinetic energy of the swing at its
lowest point?
Answer:
150J
Explanation:
Pi = Pf + Kf
200 = 50 + Kf
---> Kf = 150J
The kinetic energy of the swing at its lowest point is 150 J.
What is energy?Energy is the ability or capability to do tasks, such as the ability to move an item (of a certain mass) by exerting force. Energy can exist in many different forms, including electrical, mechanical, chemical, thermal, or nuclear, and it can change its form.
Given in the question the potential energy of a swing is 200 J at its highest point and 50 J at its lowest point
Pi = Pf + K E
200 = 50 + K E
K E = 150 J
The kinetic energy of the swing at its lowest point is 150 J.
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particles q1, q2, and q3 are in a straight line. particles q1 = -1.60 x10^-19 C, q2 = +1.60 x10^-19 C, q3 = -1.60 x 10^-19. .001 between each. what is q2.
Answer: it’s 0
Explanation:
Charlize got it right
The charge of the particle q₁ has a magnitude that equals that of proton.
The given parameters:
Charge on particle q1, = -1.6 x 10⁻¹⁹ CCharge on particle q₂, = 1.6 x 10⁻¹⁹ CCharge on particle q₃, = -1.6 x 10⁻¹⁹ CThe particle q₂ is a positive charge whose magnitude is equal to charge of proton.
A proton is a positive charge with a magnitude of 1.6 x 10⁻¹⁹ C. This charge exerts attractive force on a negative charge (electron).
Thus, the charge of the particle q₁ has a magnitude that equals that of proton.
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PLEASE ANSWER THIS QUICKLY, I WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST.
You and some friends are at the park. You find some rope and decide you'd like to
play a game of tug-of-war. Unfortunately, there are 5 people so you can't have an
equal amount of people on each side. One of your friends suggests that the two biggest people should be on one side, while the three smaller people should be on the other side. What do you think would be the best way to divide up the 5 friends for the game of tug-of-war?
Answer:
I would put one of each stronger people on the different teams and then divide up 1 person to one of the strong people and then 1 person to the other stronger person and then take the last person and make them the ref. They get to tell who is the winner and who is the loser.
Explanation:
Again this is just my opinion.
Answer:I agree with the other person
Explanation:
I agree with the other person
when is the image virtual in a concave mirror?
For an object of mass m and acceleration a, which equation can be used to
calculate the applied force on the object?
O
A. F =ma
m
B. F =
a
O
C. Fa"
a
D. F
m
SUM
Answer:
The equation for acceleration can be rewritten as B to calculate the net force acting on an object when its mass and acceleration are known.
Explanation:
I hope that helps! (B is the answer)
The equation for acceleration can be rewritten as B to calculate the net force acting on an object when its mass and acceleration are known.
What is Force?A push or pull that an object experiences as a result of interacting with another item is known as a force. Every time two items interact, a force is exerted on each of the objects.
The force is no longer felt by the two objects when the interaction ends. Only when there is interaction do forces actually exist.
Action-at-a-distance forces are those that happen even when the two interacting objects are not physically touching each other but are nevertheless able to push or pull against each other despite their physical separation.
Therefore, The equation for acceleration can be rewritten as B to calculate the net force acting on an object when its mass and acceleration are known.
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two identical 1.00 x 10^-4 C charges have an electric potential energy of 100 J. how far apart are they. (Unit = m)
Answer: 0.899
Explanation:
acellus
Answer: 0.899
Explanation: It's right in acellus I just did it
Please help, I need help with this question please
Answer:
The car's kinetic energy is 751,500 J.
The car's potential energy is 0 J.
Explanation:
The kinetic energy equation is used as KE = 1/2mv^2 and the potential energy equation is used as PE = mgh. Your mass for the car is 1670 kg and the velocity would be 30 m/s. 30^2 would equal to 900 and you multiply that by 1670 for 1,503,000. Divide that number by 2 since there is 1/2 behind it to get your car's kinetic energy which is 751,500 J.
The potential energy which is calculated by mass times gravitational energy times height would be 0 J. Because the car is at a standard height on the ground, it would make sense for the height to be 0 meters and when multiplying it, your total potential energy would be 0 J.
After a nucleus with 85 protons undergoes alpha decay, it has
? protons.
Answer:
After a nucleus with 85 protons undergoes alpha decay, it has 83 protons.
Explanation:
In an alpha particle there are two protons
In the given substance's nucleus, there are total of 85 protons
After the decay, the proton number reduce
The current proton number after decay is
85 -2 = 83
After a nucleus with 85 protons undergoes alpha decay, it has 83 protons.
The number of protons in this nucleus after it undergoes an alpha decay is 83 protons.
Given the following data:
Number of protons in nucleus = 85 protonsTo determine the number of protons in this nucleus after it undergoes an alpha decay:
The chemical symbol for an alpha particle is:
[tex]^{4}_{2} \alpha[/tex]
Therefore, we can deduce the following points about an alpha particle:
Mass number = 4Number of protons = 2After an alpha decay:
Protons = [tex]85-2[/tex]
Protons = 83
Therefore, the number of protons in this nucleus after it undergoes an alpha decay is 83 protons.
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electromagnetic waves are ........... by shiny surfaces.
1. reflected
2. refracted
3. absorbed
Answer:
Electromagnetic waves are reflected
Explanation:
Reflection of light (and other forms of electromagnetic radiation) occurs when the waves encounter a surface or other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. ... This concept is often termed the Law of Reflection.
Electromagnetic waves are reflected by the shiny surfaces. The correct option is 1.
What are electromagnetic waves?These are the rays which mostly come from the Sunlight. It possess energy or defined by energy of photon.
Reflection of light occurs when the waves strike a surface or boundary that does not absorb the energy of the radiation but bounces the waves away from the surface. This is often called the Law of Reflection.
Thus, the Electromagnetic waves are reflected by the shiny surfaces. The correct option is 1.
Learn more about electromagnetic waves.
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What is the relationship between height of high tide and height of low tide for any location? ( Small answer please :) ! )
Answer:
Tides are very long-period waves that move through the oceans in response to the forces exerted by the moon and sun. They originate in the oceans and progress toward the coastlines where they appear as the regular rise and fall of the sea surface. When the highest part or crest of the wave reaches a particular location, high tide occurs; low tide corresponds to the lowest part of the wave, or its trough. The difference in height between the high tide and the low tide is called the tidal range. Tidal range is the height difference between high tide and low tide.
EASY BRAINLIEST PLEASE HELP!!
-if you answer correctly ill give you brainliest which will give you 100pts-
(if you put links or don't answer accordingly im reporting your account)
Answer:
Solution given:
frequency[f]=60,500,000Hz
velocity[V]=300,000,000m/s
wave length=?
we have
wave length=[tex] \frac{V}{f} [/tex]
=[tex] \frac{300,000,000}{60,500,000} [/tex]
=[tex] \frac{3000}{605} [/tex]=4.96 m
Option A.4.96m
Answer:
Its C, the only thing you do is add both of the numbers and get your answer which is C.
Explanation:
A car was running in the velocity of 72km/h. What will be its velocity after 5s if it's acceleration is -2m/s^2 ?
Answer:
10m/s
Explanation:
a = v- u/ t
=> v = at + u
= -2 × 5 + 20
= 10m/ s. ( 72 km/ h = 20 m/ s)
I WILL GIVE BRAINLYEST!!!!1
Examine the following image. Which ocean-floor feature is indicated by the arrow in the image? (10 points)
Public Domain
Group of answer choices
Abyssal plain
Continental slope
Guyot
Seamount
Answer:
Continental slope
Answer: The answer is Seamount. A seamount is a submarine mountain located on oceanic crust near mid-ocean. The image shows a very long seamount in Massachusetts and that is formed by volcanic activity in New England Seamounts.
An object appears red when viewed with white light. What color would it appear when viewed with blue light?
Answer:
Colour of any object is by the colour of light it reflects i.e if white light is incident on the object,it will reflect blue color.so it will appear blue.But if red light is incident on it,it will not reflect that and absorb it.so as it will not reflect any light it will appear black.
Explanation:
true or false when the net force on an object is zero the forces are unbalanced
the answer is true like and sub to zeelitmotion :
EASY BRAINLIEST PLEASE HELP!!
-if you answer correctly ill give you brainliest which will give you 35pts-
(if you put links or don't answer accordingly im reporting your account)
Answer:
Solution given:
frequency[f]=60,500,000Hz
velocity[V]=300,000,000m/s
wave length=?
we have
wave length=[tex] \frac{V}{f} [/tex]
=[tex] \frac{300,000,000}{60,500,000} [/tex]
=[tex] \frac{3000}{605} [/tex]=4.96 m
Option A.4.96m
Answer:
4.96
Explanation:
Wavelength = Speed ( velocity ) over Frequency
If frequency = 60,500,00 and Velocity = 300,000,000
Then, Wavelength = [tex]\frac{300,000,000}{60,500,00}[/tex] which is equivalent to 4.96
-183° degrees Celsius to kelvin
Answer:
90.15K
Explanation:
The formula is x°C + 273.15 = yK
Answer:
(-183°C) = 90.15K
Explanation:
-183°C is given
Now,
K = °C + 273
K = (-183) + 273.15
K = 90.15
Thus, (-183°C) = 90.15K
-TheUnknownScientist
Which diagram represent light with the longest wavelength ?
Answer:
the answer is the diagram B
a crane lifts four pallets of bricks each of which weigh 5000 N. the crane lifts each pallet a height of 30m. the crane takes 4 minutes to do this how much useful power did the crane produce to life the bricks?
Answer:
625 W
Explanation:
Applying
P = W/t.................... Equation 1
Where p = power, W = Work, t = time
But,
W = Force (F) × distance (d)
W = Fd........................ Equation 2
Substitute equation 2 into equation 1
P = Fd/t.................... Equation 3
From the question,
Given: F = 5000 N, d = 30 m, t = 4 munites = (4×60) seconds = 240 seconds
Substitute these values into equation 3
P = (5000×30)/240
P = 625 Watt
The ship was travelling 77 meters per second, 35 degrees above the x-axis Northeast. Determine the magnitude and direction of the horizontal vector component, Vx
Answer:
vₓ = 63.07 m/s
Explanation:
The horizontal vector component of the velocity can be found by the following formula:
[tex]v_x = vCos\theta[/tex]
where,
vₓ = horizontal vector component of velocity = ?
v = magnitude of velocity = 77 m/s
θ = angle with x-axis = 35°
Therefore,
[tex]v_x = (77\ m/s)Cos\ 35^o[/tex]
vₓ = 63.07 m/s
Si un cuerpo adquiere una carga de -0,02 C, ha ganado o ha perdido electrones? Cuantos?
Question :
If a body acquires a charge of -0.02 C, has it gained or lost electrons? Many?
Solution :
We know, charge gained is shown by negative sign.
Since, charged acquired is given as -0.02 C .
Therefore, it is body has gained electrons.
Now, number of electrons is given by :
[tex]n = \dfrac{net\ charge}{charge \ on \ one \ electron}\\\\n = \dfrac{-0.02}{-1.60 \times 10^{-19}}\\\\n = 1.25\times 10^{17}[/tex]
Hence, this is the required solution.
0.40N
weight
apple
50 cm
mark
25 cm
45 cm
pivot
Fig. 3.1 (not to scale)
The centre of mass of the apple is 25 cm from the pivot and the centre of mass of the weight
is 45 cm from the pivot.
Calculate
(i) the weight of the apple,
IO
.. [2]
weight =
(11) the mass of the apple.
[1
mass =
Answer:
Explanation:
dwadad
there are two types of magnets some of them are _______ and some are _________
Answer:
There are many types of magnets, which are generally divided into two categories: permanent magnet and a soft magnet.
Explanation:
Air is a solution of 78% nitrogen, 21% oxygen and 1% other gases. Which part of this solution is the solvent?
What happens when you disconnect an electromagnet from battery?
A.it wil explode
B.it will continue to attract non-metals
C.it will stop from attracting metals
E.nothing will happen
Answer:
b.
If you disconnect the wire, the magnetic field disappears and the nail is no longer a magnet. ... The current flowing through the wire makes the wire hot and drains the battery quickly.
Explanation:
which kind of energy is the most common by-product of the energy transformation?
Answer:
kinetic energy
Explanation:
it is most common
Which of the following equations is dimensionally invalid
a. v=x+at
b. x=at^2
c. v=[tex]\sqrt{2ax}[/tex]
d. v[tex]v_{f} =v_{i} -at[/tex]
Marine science what is climate change?
Answer:
In marine ecosystems, climate change is associated with concurrent shifts in temperature, circulation, stratification, nutrient input, oxygen content, and ocean acidification. There are also strong linkages between climate and species distributions, phenology, and demography.
Explanation:
Mark her brainliest
A 150kg motorcycle starts from rest and accelerates at a constant rate along with a distance of 350m. The applied force is 250N and the coefficient of kinetic friction is 0.03. What is the net force applied to the motorcycle?
Answer:
205N
Explanation:
The net force (F) is the difference between the applied force([tex]F_{A}[/tex]) and the kinetic frictional force([tex]F_{R}[/tex]). i.e
F = [tex]F_{A}[/tex] - [tex]F_{R}[/tex] -----------------(i)
Note that;
[tex]F_{R}[/tex] = μmg
Where;
μ = coefficient of kinetic friction
m = mass of the body
g = acceleration due to gravity = 10m/s²
Equation (i) then becomes;
F = [tex]F_{A}[/tex] - μmg -------------------(ii)
Given from question;
m = mass of motorcycle = 150kg
μ = 0.03
[tex]F_{A}[/tex] = 250N
Substitute these values into equation (ii) as follows;
F = 250 - (0.03 x 150 x 10)
F = 250 - (45)
F = 205N
Therefore, the net force applied to the motorcycle is 205N
The electric field 0.500 m from a charge is 3370 N/C, pointing away from the charge. What is the charge? Include the sign of the charge, + or - (The answer is *10^-8 C. Just fill in the number, not the power.) (Unit = C)
Answer: 9.36 is correct on acellus
Explanation:
Answer:
9.36
Explanation: