We spend our lives in visible light without risks to our health. yet exposure to uv waves in sunlight can cause skin cancer. what is the best explanation for this?
uv waves are longer and carry more energy.
b) uv waves are higher frequency and carry more energy.
c) uv waves have a lower frequency and carry more energy.
d) uv waves travel faster than visible light and have more energy.

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.

What causes the formation of ocean currents?

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.2 gpa). as one goes deeper and deeper in the ocean, the pressure increases by 10000 pa for every meter below the surface. if a diver goes down 80.0 m in the ocean, by how much does each cubic centimeter of her blood change in volume? give the answer in cubic centimeters (actually one cubic centimeter equals one milliliter).