All of the different desert animals living together in the Sahara Desert make up a(n)...
O Population
O Community
O Ecosystem
O Organ System
Answers
Related Questions
what force is required to accelerate to 10 kg object to 5.9 m/s/s?
Answers
Force required to accelerate 10 kg object to 5.9 m/s/s ?
Mass = 10 kg
Acceleration = 5.9 m/s^2
Force = Mass * Acceleration
Force = 10 kg * 5.9 m/s^2
Force = 59 kg m /s^2 = 59 N
Which force is sometimes attractive and has an infinite range?
A.strong nuclear
B.weak nuclear
C.gravitational
D.electromagnetic
Answers
Answer:
C. gravitational
Explanation:
Answer:
c
Explanation:
edge
A 101 Kg racer moves around a flat circular track with a radius of 55 m with a constant speed. The car makes one revolution around the track every 13 seconds. Find the speed of the car.
Answers
Answer:
26.6 m/s
Explanation:
[tex]v = r \alpha \\ v = r( \frac{2\pi}{t} ) \\ v = (55)( \frac{2\pi}{13} ) \\ v = 26.6 \: m {s}^{ - 1} [/tex]
In the universe there are more small stars than large stars. Do you think there are more white dwarfs or black holes? Explain your answer.
Answers
Answer: black holes
Explanation:
what force on a 936kg elevator that is falling freely at 9.8 m/s^2
Answers
Answer:
9172.8 N
Explanation:
F = ma
F = (936 kg)(9.8 m/s^2)
F = 9172.8 N
Your in a car and you went 385
miles in 4 hours, how fast were
you going?
Answers
You were going 96.25mph
PLEASE HELP ME SOLVE ASAP
Answers
Answer:
a) The distance after 1 minute will be x = 600 m.
b) The distance of vertical drop from A to B is [tex]\Delta y=17658\: m[/tex].
Explanation:
Let's use the parabolic motion equations. Here we have a horizontal initial velocity, and knowing that the horizontal velocity is a constant we have:
a)
[tex]v_{x}=\frac{\Delta x}{\Delta t}[/tex] (1)
Where:
v(x) is the horizontal velocity (v(x) = 36 km/h = 10 m/s)Δx is the displacement Δt is the time (Δt = 1 min = 60 s)Usinf (1) we find Δx:
[tex]\Delta x=v_{x}\Delta t[/tex]
[tex]\Delta x=10*60=600 m[/tex]
Therefore, the distance after 1 minute will be x = 600 m
b)
Here we need to find Δy = y(A)-y(B), this is the distance of vertical drop from A to B.
Using the following equation we will get it:
[tex]y_{B}=y_{A}+v_{iy}t-\frac{1}{2}gt^{2}[/tex]
Let's recall that the initial velocity in the y-direction is 0.
[tex]y_{A}-y_{B}=0t+\frac{1}{2}gt^{2}[/tex]
[tex]\Delta y=\frac{1}{2}gt^{2}[/tex]
[tex]\Delta y=\frac{1}{2}(9.81)(60)^{2}[/tex]
[tex]\Delta y=17658\: m[/tex]
Therefore, the distance of vertical drop from A to B is [tex]\Delta y=17658\: m[/tex].
I hope it helps you!
write down your definition of work in the space below:
Answers
Answer:
Work is the energy transferred to or from an object via the application of force along a displacement.
Answer:
an occupation that people do to financally support themselves.
Explanation:
BRAINLIEST?
HELPWhat is the intensity of an electric field at a point where a 0.50 C
charge experiences a force of 20. N?
Remember to identity all of your data, write the equation, and show
your work. (5 points)
Answers
Answer:intensity of an electric field (E)
charge (q)
Force (F)
E=F/q
E=20N/.5C
E=40N/C
Explanation:
The Electric field intensity will be 40 N/C
What is an Electric field intensity ?The electric field intensity at a point is the force experienced by a unit positive charge placed at that point.
Electric field intensity(E) = force (F)/ charge(q)
given
charge = 0.50 C
Force = 20 N
Electric field intensity = ?
E = 20 N / 0.50 C
E = 40 N/C
The Electric field intensity will be 40 N/C
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What type of friction is it when two students are pushing a box that is at rest
Answers
Electromagnetic Spectrum Lab Report
if you've done this assignment or know what im talking about please helps me! if you get it correct i will give you brainliest!!!!!!!!!!!!!
Objectives(s):
In your own words, what is the purpose of this lab?
Hypothesis:
In this section, please include the predictions you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
Procedure:
The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome. Using your summary questions at the end of your virtual lab activity, please clearly define the dependent and independent variables of the experiment.
Answers
The dependent variable is the one that changes as a result of the independent variable. The spectrum emitted by the unknown celestial object in this situation.
What is the electromagnetic spectrum?The electromagnetic spectrum refers to the variety of frequencies (the spectrum) of electromagnetic radiation, as well as the wavelengths and photon energies associated with each frequency.
The goal of the electromagnetic spectrum experiment is to determine what elements are present in the atmospheres of the planets and moons by examining their absorption spectrums.
The electromagnetic spectrum encompasses electromagnetic waves with frequencies ranging from below one hertz to above 1025 hertz,
The frequency corresponds to wavelengths ranging from thousands of kilometers to a fraction of an atomic nucleus's size.
The electromagnetic waves within each frequency band are given various names, starting at the low frequency (long wavelength) end of the spectrum.
Hence the dependent variable is the one that changes as a result of the independent variable.
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Answer:
Explanation: Electromagnetic Spectrum Lab Reportif you've done this assignment or know what im talking about please helps me! if you get it correct i will give you brainliest!!!!!!!!!!!!!Objectives(s):In your own words, what is the purpose of this lab?Hypothesis:In this section, please include the predictions you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
Some help please :)
At which stage in the life cycle of a star is helium combined to form elements lithium through iron? Explain.
Answers
Answer:
Explanation:
During the formation of the universe some 14 billion years ago in the so-called ‘Big Bang’, only the lightest elements were formed – hydrogen and helium along with trace amounts of lithium and beryllium. As the cloud of cosmic dust and gases from the Big Bang cooled, stars formed, and these then grouped together to form galaxies.
Kennedy and Lilly are in science class. They are asked to prove that some forces are non-contact
forces. The girls list five examples of objects exerting a force on each other without touching. Do you
agree with their list? Tell why or why not?
1. Two like magnetic poles repel each other.
2. Putting on a wool sweater can make your hair get static electricity when it rubs against the
sweater.
3. When you bring two negatively charged balloons near each other they push each other away.
4. Magnets stick to a refrigerator.
Number 1 and 3 demonstrate non-contact forces because the magnets or electrically charged objects exert
forces on each other without touching.
3 is the only example of non-contact forces since like charges repel each other.
Number 1 and 4 are non-contact forces since they both use magnets.
All four are good examples of non-contact forces since they all use either magnets or electric charge which are
non-contact forces.
Answers
Answer:1,3 and 5
Explanation:
The resistance of a 24 W, 12 V filament lamp depends on the current flowing through the lamp. For currents up to 0.8 A, the resistance has a constant value of 2.5 Ω.
Calculate the potential difference across the lamp when a current of 0.8 A flows through the lamp.
Answers
Answer:
V=IR
V=0.8×2.5
V=2V
where V=potential difference
I=Current
R=Resistance
.........
Some snakes have special sensory organs that detect the infrared region of the electromagnetic spectrum.
Compared with human vision, these snakes can sense electromagnetic waves that have
a lower frequency and a shorter wavelength.
a higher frequency and a longer wavelength.
O a lower frequency and a longer wavelength.
O a higher frequency and a shorter wavelength.
Answers
Answer:
Some snakes have special sensory organs that detect the infrared region of the electromagnetic spectrum. Compared with human vision, these snakes can sense electromagnetic waves that have: a lower frequency and a shorter wavelength. a higher frequency and a longer wavelength.
Explanation:
Some snakes have special sensory organs that detect the electromagnetic spectrum's infrared region. These snakes can detect electromagnetic waves with a lower frequency and a shorter wavelength than humans. A higher frequency and a longer wavelength. As a result, option B is right.
What is electromagnetic spectrum ?The electromagnetic spectrum encompasses electromagnetic waves with frequencies ranging from less than one hertz to greater than 1025 hertz, corresponding to wavelengths ranging from thousands of kilometres to a fraction of the size of an atomic nucleus. This frequency range is divided into separate bands, and the electromagnetic waves within each frequency band are given different names; beginning at the low-frequency (long-wavelength) end of the spectrum, these are: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
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It takes 29.53 days for the Moon to rotate around Earth. What would happen if the Moon does not rotate or rotates faster than it does now?
Answers
Answer:
Explanation:
If the Moon rotated as fast as the Earth would we only see one side of the Moon? ... The Moon, on the other hand, rotates once around its own axis every 28 days, and once around the Earth in that same 28 days. The end result of this combination is that the same side of the Moon is always facing the Earth.
Answer:
If the Moon rotated as fast as the Earth would we only see one side of the Moon? ... The Moon, on the other hand, rotates once around its own axis every 28 days, and once around the Earth in that same 28 days. The end result of this combination is that the same side of the Moon is always facing the Earth.
Explanation:
4. Find the density of 2750 g of a substance that occupies 250 mL.
Answers
When you blow across the top of a
soda bottle, it acts like a closed
pipe. If the inside of the bottle is
0.150 m long, what is the
fundamental frequency you hear?
(Speed of sound = 343 m/s)
(Unit = Hz)
Answers
Answer:
572
Explanation:
Got it right on Acellus, you take the velocity and divide it by 4 times the length.
Explain How do the attractions between particles in a fluid determine viscosity?
Answers
Answer: Viscosity is due to particle mass, particle shape, and the strength of the attraction between the particles of a liquid. In general, the stronger the attractive forces between particles, the higher the viscosity. For many liquids, viscosity decreases when heat is applied.
Explanation:
3-the-lamps are connected in series. The first-lamp-has-a-current-of2-A and
a resistance of 4 Ohms. The second-lamp has a voltage of 10V. The third-lamp has a
voltage of 6V. Find in this diagram the total voltage, the current for all the lamps, the
total-resistance.
Answers
Hold your index finger and middle fingers close to each other, leaving a small slit between them about 1 mm in width. Look through the slit into a source of light such as the window or lamp (NOT THE SUN). You will need to look with one eye up close to the slit. Why do the vertical black lines show up when your fingers are close together but not when they are far apart? Explain.
Answers
Answer:
I would say tunnel vision cause your only using one eye and if your looking through a tiny space your vision gets blury
Explanation:
A boy is looking into a plane mirror .His nose is 30 cm in front of the mirror .How far is his nose from where its image appears to be ?
Answers
Answer:
60cm
Explanation:
30+30=60
Un asensor de masa 500 kg , con cuatro personas a bordo , cada una con una masa de 75 kg , asciende con una altura de 28 metros Calcula la energia potencial que adquiere el asensor
Answers
Answer:
U = 2,195 10⁵ J
Explanation:
The potential energy is
U = m g and
in this case each person has a mass of 75 kg and the elevator has a mass of 500 kg, the total mass is
m_total = m_elevator + 4 m_person
m_total = 500 + 4 75
m_toal = 800 kg
let's calculate
U = 800 9.8 28
U = 2,195 10⁵ J
A student measures the time it takes for two reactions to be completed.
Reaction A is completed in 39 seconds, and reaction B is completed in 50
seconds. What can the student conclude about the rates of these reactions?
A. The rate of reaction A is higher.
B. The rates of reactions A and B are equal.
C. The rate of reaction B is higher.
Answers
Answer:
The rate of reaction A is higher.
answer is AAAAA !
Explanation:
Answer: A. The rate of reaction A is higher
Explanation:
What do supernova have to do with heavy elements?
Answers
Answer:
When a star dies, it is called a supernova. A supernova contains massive amounts of energy, and the hydrogen and helium that was originally in the star turns into heavier elements ranging from oxygen to iron to gold.
Let me know if this helps!
Answer:
Read Below
Explanation:
During the supernova nucleosynthesis, the r-process creates heavy isotopes, which decay after the event to the first stable isotope, thereby creating the neutron-rich stable isotopes of all heavy elements. The neutron capture occurs in high neutron density with high-temperature conditions.
What is the speed of light in a medium if the index of refraction is 1.57?
Answers
Answer:
1.91 × 10⁸ m/s
Explanation:
[tex]n = \frac{c}{v} \\ 1.57 = \frac{3.0 \times {10}^{8} }{v} \\ v = 1.91 \times {10}^{8} \: ms {}^{ - 1} [/tex]
The speed of light in a medium if the index of refraction is 1.57 is 1.91 * 10⁸ m/s
The refractive index of a material is the ratio of speed of light in air to speed of light in the medium. It is given by:
Refractive index(n) = speed of light in air(c) / speed of light in material(v)
Given that n = 1.57, c = 3 * 10⁸ m/s, hence:
n = c/v
1.57 = 3 * 10⁸ / v
v = 1.91 * 10⁸ m/s
The speed of light in a medium if the index of refraction is 1.57 is 1.91 * 10⁸ m/s
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Two charged objects have a repulsive force of 0.050 N. If the charge of both of the objects is doubled, then what is the new force?
Answers
Answer: 4 times grease
Explanation: Force F= C · q1·q2/r². C = Coulomb's constant.
If charges double you have 2q1 and 2q2.
A child pulls on wagon with force of 20 N if the wagon models a total of 10 M in four seconds what is the average power generated by the child in watts
Answers
Answer:
[tex]power = \frac{(force \times distance)}{(time)} \\ power = \frac{(20 \times 10)}{4} \\ power = \frac{200}{4} \\ power = 50 \: watts[/tex]
The magnitude of a force is:
A) How fast an object moves when it is pushed
B) How far an object moves when it is pushed
C) how hard an object is pushed or pulled
D) how long it takes to push or pull an object
Answers
Answer:
c
Explanation:
force is how hard it is pulled or pushed
Jared is experimenting with a force that is attractive only and the weakest of the fundamental forces. He is experimenting with which force?
electromagnetic
strong
gravitational
weak
Answers
Answer:
C. gravitational
Explanation:
Took the test!