500km is equal to how many millimeters

3) The energy resulting from motion is called

An observer sees a flower pot sail up and then back down past a window 2.45 m high. If the total time the pot is in the sight is 1 s, what is the height above the window up to which the pot rises?

For a constant voltage, how is the resistance related to the current? A) Resistance is inversely proportional to current, so when the resistance doubles, the current is cut in half.

If the speed of light in a vacuum is twice that of the speed of light in a given material, what is the index of refraction for that material?

Which of these was designed to study Saturn? A) Voyager 1, Hubble, and Cassini B) Huygens, Voyager 1, and Hubble C) Cassini, Hubble, And Huygens D) Voyager 1, Huygens, and Cassini

An elevator has mass 600 kg, not including passengers. the elevator is designed to ascend, at constant speed, a vertical distance of 20.0 m (five floors) in 16.0 s, and it is driven by a motor that can provide up to 40 hp to the elevator.

Suppose that 100g of aluminum at 23 degrees C is added to 50g of water at 95 degrees C. Determine the equilibrium temperature of the mixture. Ignore heat loss to the container or the surroundings.

Which property of coal makes it ideal for use in a power plant? Check all that apply. It burns easily. It makes ash. It is renewable. It produces a lot of energy. It contains mercury.

Bob is coming toward you at a speed of 75 km/hr. You throw a baseball in his direction at 75 km/hr. What does he see the ball doing?

Give 3 examples of something with potential energy.