Water at 290K flows at 0.5 m/s along a flat plate. For x < 10 cm, the surface temperature is also 290K. For 10 < x < 30 cm, the surface temperature is 310K. Calculate the local heat flux at x

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?