Read and answer the following;

I. (Law of Universal Gravitation)

1. The mass m1 of one small spheres of Cavendish balance is 0.0100 kg, the mass m₂ of the nearest large sphere is 0.500 kg, and the center-to-center distance between them is 0.0500 m. Find the gravitational force on each sphere due to the other.

2. A typical adult human has a mass of about 70 kg. What force does a full moon exert on such a human when it is directly overhead with its center 378,000 km away? m_moon = 7.35 x 10²² kg.

3. According to the equation for gravitational force, what happens to the force between bodies if the mass of one of the bodies is doubled? If both masses are doubled?

4. Gravitational force acts on all bodies in proportion to their masses. Why, then, doesn't a heavy body fall faster than a light body?

II. (Fluids)

5. A boulder is thrown into a deep lake. As it sinks deeper and deeper into the water, does the buoyant force upon it increases or decreases?

6. Why do astronauts wear pressurized suits?

7. What will happen to windows during a super typhoon? Will it implode or explode?

8. Give 2 examples of each:

a. Pascal's Principle

b. Archimedes' principle

c. Bernoulli's principle