Suppose a ball with mass m hangs vertically from a spring with stiffness k and relaxed length l0. at what length leq will the ball encounter equilibrium?

At equilibrium, the sum of vertical forces are equal to zero. Let's analyze the downward and upward components of the forces.

Downward forces: (Gravity)( is the gravitational constant.)

Upward forces: (Spring)

Equilibrium condition: .

so

Explanation:

If there is no masses hanging from the spring, the length of the spring is equal to . When there is a mass M hanging, the spring will be stretched by an amount of . This distance can be found by using the equilibrium condition, that the sum of the forces is equal to zero.

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

frequency or wavelenth of em radiation in a vacuum