What is the internal heat gain, in kw, from a factory with 20 kw of lighting (surface-mounted), 10 kw of running motors, and 10 people doing light benchwork?

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e