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?

An ideal gas system undergoes an isovolumetric process in which 20 J of energy is added as heat to the gas. What is the change in the system's internal energy? -20 J 0Ј 5J 20 J

If you are traveling in a primary channel and you encounter a red and green marker (with the green band on top) when proceeding in an upstream direction, what must you do

In what state of matter are particles vibrating and moving at high speeds? Gas Liquid Solid Plasma

What is a coefficient in a chemical equation? A. the subscript after an atomic symbol B. a subscript before an atomic symbol C. a number following an elemental or molecular symbol D. a number preceding an elemental or molecular symbol

If calvin pushes a lawnmower 20 meters with a force of 2n. how much work has he done?

The inner planets or call terrestrial because they

If the amplitude of a wave is increased the frequency of the wave will

Tell how energy is transferred to the building where the heater is located

Which best describes nuclear fission? A. A nucleus spontaneously splits and absorbs energy. B. Two nuclei spontaneously combine and absorb energy. C. A nucleus collides with a neutron and splits, releasing energy. D.

A 70 kg hockey player traveling at 6 m/s collides directly with a 76 kg player traveling at - 5.4 m/s. Which way do they go after the collision and what is their velocity after the collision? (Assume that the players stick together after colliding).