Calculate the presure exerted on a swimmer when he is
a) at the water surface
b) 5m below the water surface
(Take density of the water p = 1000kg cubic meter, acceleration due to gravity g = 10m s cubic, atmospheric pressure p = 1.01×10^5 Pa)

When using two-wire cable to feed a 240-v appliance that does not require a neutral wire, you should a. mark both ends of the white wire green. b. use the cable as is. c. use only the black wire. d. mark both ends and any exposed area of the white wire black.

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

Match these items. 1. coulombs __force 2. ohms __emf 3. centimeters __resistance 4. newtons __charge 5. volts __length