A light source emits a beam of photons, each of which has a momentum of 2.7 * 10-29 kg·m/s. (a) what is the frequency of the photons? (b) to what region of the electromagnetic spectrum do the photons belong?

A 20 μF capacitor initially charged to 30 μC is discharged through a 1.5 kΩ resistor. Part A How long does it take to reduce the capacitor's charge to 10 μC? Express your answer with the appropriate units.

There are 180 days in a school year. how many are. in a year

Which of the following does NOT describe the conversion of potential to kinetic energy? The Sun emitting light A rocket leaving the Earth's atmosphere Releasing a stretched rubber band An avalanche

A skateboard with a mass of 4 kg is moving at a speed of 10 meters per second on a level surface. It encounters a hill and rolls up until it stops. Ignoring friction, to what vertical height does it rise (in meters) ?

A young girl slides down a rope. As she slides faster and faster she tightens her grip increasing the force exerted on her by the rope. what happens when this force is equal in magnitude to her weight?

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.