A laser pulse with a wavelength of 515 nm contains 4.40 mJ of energy. How many photons are in the laser pulse

What are the factors that affect the resistance of a wire?

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply