Calculate the electrostatic force between an electron and proton seperated by 0.530×10^10

To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .

Which type of wave can travel without a medium

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?