A 1.5-kg mass attached to an ideal massless spring with a spring constant of 20.0 N/m oscillates on a horizontal, frictionless track. At time t = 0.00 s, the mass is released from rest at x = 10.0 cm. (That is, the spring is stretched by 10.0 cm)
(a) Find the frequency of the oscillations.
(b) Determine the maximum speed of the mass. At what point in the motion does the maximum speed occur?
(c) What is the maximum acceleration of the mass? At what point in the motion does the maximum acceleration occur?
(d) Determine the total energy of the oscillating system.
(e) Express the displacement x as a function of time t.
(a) 0.58 Hz
(b) 0.37 m/s, at the equilibrium position
(c) 1.3 m/s2, at maximum displacement
(d) 0.10 J
(e) x = (0.10 m) cos(3.7t)
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at the origin (point O)?
A. A B. B C. C D. D E. E F. F T. Zero
You obtain a 100-W light bulb and a 50-W light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage
If each one is an incandescent bulb of fixed resistance, which statement about these bulbs is correct? A) Both bulbs glow with the same brightness, but less than their normal brightness. B) Both bulbs glow with the same brightness, but more than their normal brightness. C) The 100-W bulb glows brighter than the 50-W bulb. D) The 50-W bulb glows more brightly than the 100-W bulb.
The majority of Earth's atmosphere is found within which atmospheric layer?
A. stratosphere B. van Allen Belts C. troposphere D. ionosphere E. ozone layer
Which of the following is a principal advantage of CCDs over photographic film?
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