And an explanation would be great 1. 6,000 g of lead is at a temperature of 20 °C. When it comes in contact with a hot piece of zinc, it heats up to a temperature of 30 °C.

A. How much heat is gained by the lead?

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

The law of reflection states that the angle of reflection is equal to the angle of