Which is a good example of a contact force?

protons in the nucleus of an atom

a ball falling down after it's thrown up into the air

a satellite orbiting Earth

a bat hitting a ball

Three liquids that will not mix are poured into a cylindrical container. The volumes and densities of the liquids are 0.50 L, 2.6 g/cm3; 0.25 L, 1.0 g/cm3; and 0.40 L, 0.70 g/cm3. What is the force on the bottom of the container due to these liquids

By what factor will the electric force between two charged objects change if the charge on both objects is quadrupled A. 1/4 B. 4 C. 8 D. 16

A single-turn wire loop 10 cm in diameter carries a 10 a current. it experiences a torque of 2.5*10-2 n⋅m when the normal to the loop plane makes a 33 ∘ angle with a uniform magnetic field.

How much space something takes up is called?

What equivalency exists between solid volume and liquid volume

If r = KL/d2 find L to the nearest tenth foot if r = 2.5 ohms, k = 10.8 and = 85 mil

A 1500 kg car accelerates uniformly from rest to reach 10.0 m sin 5.00 s. Determine (i) the average power delivered by the engine.

What is 1/3 of 300

What geologic features might form at the surface of plate A?

Is it true that mollusks that live in water have lungs