What is considered light? Select ALL that apply Options:
A. Visible light spectrum (Roy g. Biv)
B. Sound waves
C. Radio waves
D. Infrared
E. Ultraviolet

A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?

If element x has 99 protons how many electrons does it have

You can decrease the resistance of a length of wire by