A pulsed laser emits light in a series of short pulses, each having a duration of 44.0 ms. The average power of each pulse is 6.00 mW, and the wavelength of the light is 633 nm. a. Find the number of photons in each pulse.
b. Find the energy of each pulse.

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)

Which component of the earth’s atmosphere is decreased due to photosynthesis?