Anoisy toy is placed in a glass jar. all the air is then slowly removed from the jar. how does this affect the sound you hear? the sound of the toy increases until it reaches its maximum. the sound of the toy decreases and then stops. the sound of the toy is not affected. the sound of the toy increases and decreases periodically.

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?