This question has two parts. A. A small, closed chamber of gas is heated. When the gas in the
chamber expands, it does 5 J of work on a piston. The gas has
an initial energy of 8 Jand a final energy of 30 J. Considering
the equation for the first law of thermodynamics (AU = Q + W).
does the work done in this scenario have a positive or negative
value? Explain

B. How much heat is added to the gas in the chamber?

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?

During the apollo moon missions, astronauts were concerned about the effects of newton's third law of motion when: o a. they ejected waste water, because they were concerned that it would push them off course. o b. they reentered earth's atmosphere, because they were carrying heavy moon rocks. o c. they took off from earth, because a large force was required to generate large acceleration. o d. they detected incoming space debris, because the inertia of the debris could damage their ship.