A body oscillates with simple harmonic motion along the x axis. Its displacement varies with time according to the equation x = 5.0 cos (?t). The magnitude of the acceleration (in m/s2) of the body at t = 1.0 s is approximately
A. 3.5.
B. 49.
C. 14.
D. 43.
E. 4.3.
Answer: B
You might also like to view...
The figure shows two point sources of light, A and B, that emit light waves in phase with each other. A is a distance of 3? from point P. B is distant 5? from P. (? is the wavelength.) The phase difference between the waves arriving at P from A and B is
?
?
A. 0 rad. B. ? rad. C. 2? rad. D. 3? rad. E. 4? rad.
Potential Energy: An electron is released from rest at a distance of 9.00 cm from a fixed proton. How fast will the electron be moving when it is 3.00 cm from the proton? (k = 1/4??0 = 8.99 × 109 N ? m2/C2, e = 1.60 × 10-19 C, melectron = 9.11 × 10-31 kg, mproton = 1.67 × 10-27 kg)
A. 75.0 m/s B. 106 m/s C. 130 m/s D. 1.06 × 103 m/s E. 4.64 × 105 m/s
Constant Acceleration Kinematics: A car starts from rest and accelerates at a steady 6.00 m/s2. How far does it travel in the first 3.00 s?
A. 9.00 m B. 18.0 m C. 27.0 m D. 36.0 m E. 54.0 m
If the temperature of the bubble described in problem T7T.8 was 320 K when it formed, what is its approximate final temperature when it reaches the surface?
A. 40 K B. 80 K C. 320 K D. 1280 K E. 2560 K F. Other (specify)