All electromagnetic waves have the same speed in which of the following?

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 = 2.6 m below the tank bottom which is a = 6.7 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). report your answer in meters to two decimal places.

Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?

Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.