50 j of work was performed in 20 seconds. how much power was used to do this task? a. 4 w b. 24.5 w c. 0.4 w d. 2.5 w

Three charge are arranged as shown in the diagram. the magnitude of the net electrical force acting on the +6 uc charge, rounded to the tenths place, is .

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

You are doing a science experiment with a fahrenheit thermometer. your data must be in degrees celsius. if you measure a temperature of 125°f, what is this temperature in degrees celsius