A hydrogen atom is in its n = 2 excited state when its electron absorbs a photon of energy 8.5 ev. what is the kinetic energy of the resulting free electron?

Two forces present in projectile motion are: a. Gravity and acceleration b. Gravity and initial forward velocity c. Gravity and air resistance d. Gravity and weak nuclear force

who did more work a man walking 20km up a hill in 1 hour or a man bycicling 20km up the same hill in 30 minutes

A pendulum has maximum velocity

Why do metals conduct electricity

The sound intensity of street traffic is about 107 times greater than the threshold of hearing. what is the relative intensity of street traffic? use the formula

Along with an alpha particle what other product is produced in the alpha decay of americium-241

What does Newton's second law of motion say

Two sinusoidal waves are moving through a medium in the positive x-direction, both having amplitudes of 7.00 cm, a wave number of k=3.00m-1, an angular frequency of ω=2.50s-1, and a period of 6.00 s, but one has a phase shift of an angle ϕ=π12rad.

Which season does the Southern Hemisphere experience when it is tilted toward the sun? A. winter B. summer C. spring D. autumn

For an ideal fluid flowing through a horizontal pipe, Bernoulli's principle and the continuity equation state that the pressure within the pipe does which of the following? (Assume measurements are taken along the pipe in the direction of fluid flow.