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4 years ago

What does the troposphere protect us from?

1 answer:

8 0

The troposphere is responsible for weather, including rain, which protects Earth's inhabitants from drought and starvation.

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The ratio of carbon-14 to nitrogen-14 in an artifact is 1:7. Given that the half-

ycow [4]

Answer:

17,190 years old

Explanation:

A p e x

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3 years ago

A force of 30 N is applied tangentially to the rim of a solid disk of radius 0.14 m. The disk rotates about an axis through its

jenyasd209 [6]

Answer:

3.8 kg

Explanation:

The torque, τ, due to the force, F, is given by

$\tau = F\times r$

where r is the radius.

This torque is also given by

$\tau = I\times\alpha$

where I and α are respectively the moment of inertia and the angular acceleration.

For a solid disk, its moment of inertia for an axis though its centre and perpendicular to its face is given by

$I = \frac{1}{2}mr^2$

where m is its mass and r is its radius.

Hence, we have

$\tau = F\times r = I\times\alpha=\frac{1}{2}mr^2\times\alpha$

$m = \dfrac{2F}{r\alpha} = \dfrac{2(30\ \text{N})}{(0.14\ \text{m})(115\ \text{rad/s}^2)} = 3.8\ \text{kg}$

5 0

3 years ago

Read 2 more answers

Explain the difference between mass and weight for objects on earth and on the moon

blsea [12.9K]

Answer: Gravity causes a change in the mass of objects on earth and the moon.

Explanation:

Because of gravity, the weight of objects lessen, and decrease because of gravity. If you were to drop an object from earth from space, the object would have more mass. Hope that helps.

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3 years ago

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What is nuclear energy

suter [353]

Answer:

Nuclear energy, also called atomic energy, energy that is released in significant amounts in processes that affect atomic nuclei, the dense cores of atoms. It is distinct from the energy of other atomic phenomena such as ordinary chemical reactions, which involve only the orbital electrons of atoms.

Explanation:

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3 years ago

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Two spheres having masses M and 2M and radii R and 3R, respectively, are released from rest when the distance between their cent

Andrei [34K]

Answer:

$v_2 = \sqrt{\frac{GM}{3R}}$