Overnight temperatures are warmer when the air is humid because: water vapor is a good absorber of incoming shortwave radiation, causing more energy to be stored during the day. water vapor is good at scattering longwave radiation. water vapor is a good absorber of outgoing longwave radiation. water vapor and clouds cause the earth system to have a higher nighttime albedo

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above