A mass on a spring vibrates in simple harmonic motion at a frequency of 8.0 Hz and an amplitude of 2.0 cm. If a timer is started when its displacement is a maximum (hence x = 2.0 cm when t = 0), what is the speed of the mass when t = 3.0 s?
a. zero
b. 100 m/s
c. 3.0 m/s
d. 2.0 m/s
e. 50 m/s
a
You might also like to view...
An atom can get the energy that moves an electron to a higher energy level by:
A) absorbing a photon of electromagnetic radiation. B) preventing collisions with other atoms. C) moving the electron to a tightly bound level. D) transferring the electron to the ground state.
Consider the four U.S. non-renewable energy resources: gas, oil, coal, uranium without recycling for plutonium recovery. Assuming that we used each of these for a major portion of our energy needs, for which ones would domestic U.S
resources run out within some 50 years, and which ones does the United States have in much greater abundance? A) The United States is running out of gas and oil, but has abundant coal and uranium. B) The United States is running out of all four. C) The United States is running out of gas, oil, and uranium, but has abundant coal. D) The United States has abundant supplies of all four of these resources. E) The United States is running out of gas, oil, and coal, but has abundant uranium.
A 4.0-kg block is lowered down a 37° incline a distance of 5.0 m from point A to point B. A horizontal force (F = 10 N) is applied to the block between A and B as shown in the figure. The kinetic energy of the block at A is 10 J and at B it is 20 J. How much work is done on the block by the force of friction between A and B?
A. ?58 J B. ?53 J C. ?68 J D. ?63 J E. ?47 J
In a two-slit experiment using coherent light, the distance between the slits and the screen is 1.10 m, and the distance between the slits is 0.100 mm
If the first-order bright fringe is measured to be 3.40 cm from the centerline, what is the wavelength of the light? A) 3.09 ?m B) 241 nm C) 2.11 ?m D) 354 nm E) 133 nm