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2 years ago

7

A building that is 105.50 ft. feet tall is casting a shadow that is 37.50 ft. feet. If the building next to it, is casting a sha

dow of 41.00 ft. feet, how tall is that building?

1 answer:

Arlecino [84]2 years ago

7 0

115.35 ft

Set the proportion up 37.50/105.50 = 41/x and solve for x

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4) The mass of Pluto is 1.31 x 1022 kg and its radius is 1.15 x 106 m. What is the acceleration of

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Answer:

0.661 m/s²

Explanation:

g = MG / r²

g = (1.31×10²² kg) (6.67×10⁻¹¹ m³/kg/s²) / (1.15×10⁶ m)²

g = 6.61×10⁻¹ m/s²

g = 0.661 m/s²

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2 years ago

The reacting force that is equal to and opposite in the direction to the centripetal force and tends to fling air out of the cen

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Answer:

Centrifugal force

Explanation:

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2 years ago

The force that binds atoms together to form molecules is

DIA [1.3K]

Answer:

The electromagnetic force

Explanation:

There are four fundamental forces in nature:

- Gravitational force: it is the force that acts between any particles having mass. It is relevant only on very large scales (planets, stars), since it is the weakest of the 4 forces, so very large masses are needed in order to produce relevant effects.

- Electromagnetic force: it is the force that acts between particles with electric charge. It can be attractive or repulsive. It is the main force that acts between atoms and molecules.

- Strong nuclear force: it is the force that keeps the protons and the neutrons together inside the nucleus. It acts only on very short scales (only within the nucleus of the atom)

- Weak nuclear force: it is the force responsible for the radioactive decays of certain nuclei. It also acts on very short scales.

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3 years ago

The truck in which

sertanlavr [38]

Answer:

m = 4

Explanation:

We have,

You apply a force of 600 N to the branch which acts as a lever. It means it is input force, IF = 600 N

The rear of the truck weighs 2,400 N. It means it is output force, OF = 2400 N

The ratio of output force to the input force is equal to the mechanical advantage of the lever arm. It is given by :

$m=\dfrac{2400}{600}\\\\m=4$

So, the mechanical gain of the lever arm is 4.

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2 years ago

Two paths lead to the top of a big hill. One is steep and direct, while the other is twice as long but less steep. How much more

umka2103 [35]

Answer:

None.

Explanation:

Gravitational potential energy, depends only of the mass on which the gravity is doing work, and the displacement produced by this force.
As displacement depends only on the final and initial positions (in this case, the height of the hill), if we choose as our zero reference level the bottom of the hill, the change in gravitational potential energy will be as follows:

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As we can see, the only value of distance involved is the height of the hill , so it is independent of the distance travelled.

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3 years ago