The gases cast off by a dying star are called A. dark matter. B. neutron clouds. C. planetary nebulae. D. remnants.

What is the threshold frequency ν0 of cesium?

A student, starting from rest, slides down a water slide. on the way down, a kinetic frictional force (a nonconservative force) acts on her. the student has a mass of 76 kg, and the height of the water slide is 12.8 m.

A high diver leaves the end of a 5.0 m high diving board and strikes the water 1.5 s later, 2.4 m beyond the end of the board. considering the diver as a particle, determine the initial velocity

In the diagram, which is demonstrated by arrow 1? A. liquid water evaporating from the surface to the atmosphere B. water vapor condensing into liquid water in the atmosphere C. liquid water moving from the atmosphere to the surface D.

To convert from meters per second to kilometers per second you need only to divide by 1000

According to the kinetic-molecular theory, gases condense into liquids because of

What does sound travel throu better

How does a change in resistance affect the conductivity of a material? A) The lower the resistance, the worse the conductivity B) The lower the resistance, the better the conductivity C) The higher the resistance, the better the conductivity D) The

Two railroad cars, each of mass 6500 kg and traveling 80 km/h in opposite directions, collide head-on and come to rest. how much thermal energy is produced in this collision?

What is a result of using a machine?