A ladder of length L is shown below leaning against a smooth wall. Suppose that the ladder is uniform and has a weight of 300 N. How large a friction force must exist between the ladder and the ground to keep the ladder
stationary? What is the minimum coefficient of friction required?

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction

An atom that has gained or lost electrons is called an _