A force of 660 n stretches a certain spring a distance of 0.300 m. what is the potential energy of the spring when a 70.0 kg mass hangs vertically from it?

Calculate the acceleration of the car for each set of conditions using the formula a = (v2 - v1) / (t2 - t1) where v2 and v1 are the first and second velocities and t1 and t2 are the average times the car took to reach the 0.25 and the 0.

Harry has two types of materials of the same mass, one is a piece of paper, the other a copper ball. (a) explain why the copper ball hits the ground first when both are dropped near the surface of the earth even if they experience the same

In the rectangle to the left, if the perimeter was 90 inches, what would the value of x be?

Which property describes the amount of energy that flows past a given area per unit of time?

Which of the following is true for all types of fronts (warm, cold, stationary, and occluded) ?

Does the elf owl's small size allow it to live in cacti

If grapefruit juice has a ph of 3.0 and egg white have a ph of 8.0, which contains more h + ions? how many more?

Consider a single photon with a wavelength of λ, a frequency of ν, and an energy of e. What is the wavelength,? Consider a single photon with a wavelength of λ, a frequency of ν, and an energy of e.

You give a shopping cart a job down the aisle the cart is full of groceries and has a mass of 18 kilograms the cart accelerates at a rate of 3 m/s how much force did you exert on the cart

A solid spherical insulator has radius r = 2.5 cm, and carries a total positive charge q = 8 * 10-10 c distributed uniformly throughout its volume. find the magnitude of the electric field |e| at a radius of 5 cm from the origin (i. e.