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DENIUS [597]
3 years ago
9

Which of the following are comprised of proteins?

Physics
1 answer:
Zolol [24]3 years ago
5 0
The answer is A and B
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What is matter made of ? Will mark as brainliest to answer
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Explanation:

All matter is made up of atoms, which are turned up of protons, neutrons and electrons.

They bond together to make up matter

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What is the contour interval of this map? a. 20 feet b. -20 feet c. 60 feet 11​
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c. 60 feet is the correct answer

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what is the contour interval of this map? a.20 b.-20 c. 60 feet 11

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Which of the following statements is TRUE? The side of the Moon facing away from the Earth is in perpetual darkness. The Moon is
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The Moon's distance from the Earth varies during its orbit

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The correct statement is ,The Moon's distance from the Earth varies during its orbit.

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2 years ago
As a box slides down a ramp, friction does 23.0 joules of work. At the bottom of the ramp, the box has 3.8 joules of kinetic ene
tensa zangetsu [6.8K]

Answer:

The high of the ramp is 2.81[m]

Explanation:

This is a problem where it applies energy conservation, that is part of the potential energy as it descends the block is transformed into kinetic energy.

If the bottom of the ramp is taken as a potential energy reference point, this point will have a potential energy value equal to zero.

We can find the mass of the box using the kinetic energy and the speed of the box at the bottom of the ramp.

E_{k}=0.5*m*v^{2}\\\\where:\\E_{k}=3.8[J]\\v = 2.8[m/s]\\m=\frac{E_{k}}{0.5*v^{2} } \\m=\frac{3.8}{0.5*2.8^{2} } \\m=0.969[kg]

Now applying the energy conservation theorem which tells us that the initial kinetic energy plus the work done and the potential energy is equal to the final kinetic energy of the body, we propose the following equation.

E_{p}+W_{f}=E_{k}\\where:\\E_{p}= potential energy [J]\\W_{f}=23[J]\\E_{k}=3.8[J]\\

And therefore

m*g*h + W_{f}=3.8\\ 0.969*9.81*h - 23= 3.8\\h = \frac{23+3.8}{0.969*9.81}\\ h = 2.81[m]

8 0
3 years ago
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