In which way is the electric force similar to the gravitational force? A. Electric force is proportional to the mass of the object.
B. Electric force is similar in strength to gravitational force.
C. Electric force is both attractive and repulsive.
D. Electric force decreases in strength as the distance between the charges increases.

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.