How much work does the electric field do in moving a proton from a point with a potential of +145 v to a point where it is -75 v ? express your answer in joules?

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)

How did the germans define who was jewish?

Select the correct lewis structure for fluorine which is group 7a element?