Consider a 3+1d universe described by the following line element where h is constant. for a comoving galaxy (i. e. its location is described by a fixed set of (a, y,*), will we observe cosmological redshifting of light?

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?

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.

Which statement best describes the direction of the buoyant force on any object? a. opposite the force of gravity b. in the same direction as the weight c. in the direction of motion of the object d. opposite the direction of motion of the object