a +5mC at rest is 10 cm away from a+100mC stationary charge. (i) calculate the electric potential energy between the two charges. (ii) what is the electric potential energy when the +50 mC is 52cm away from the other charge? (iii) how much work was required to move the charge from 10cm to 50cm away from the stationary charge? (iv) what is the final speed of +5mC when it's 50cm away?

atomic = no of protons.

mass number-atomic number = neutron number

probably not if net force is zero

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.