Identical point charges (45 C) are placed at the corners of a square with
sides of 2.0-m length. How much
external energy is required to bring a
fifth identical charge from infinity to
the geometric center of the square?

Athermometer is removed from a room where the temperature is 70° f and is taken outside, where the air temperature is 10° f. after one-half minute the thermometer reads 60° f. what is the reading of the thermometer at t = 1 min? (round your answer to two decimal places.) ° f how long will it take for the thermometer to reach 30° f? (round your answer to two decimal places.)

How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a.the kinetic energy increases.b.the kinetic energy decreases.c.the kinetic energy remains the same.d.the kinetic energy is always zero.

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?