Which one of the arrows below most closely indicates the direction of the bob’s acceleration when it is at point 3?
A. A
B. B
D. D
E. E
F. F
F. F
You might also like to view...
For the x-ray diffraction pattern in Figure 15.4 produced with copper K? of wavelength 0.1541 nm, assume that this is some unknown material, but it has been determined that the material is cubic by Laue diffraction.
(a) Prove that the material is BCC. (b) Determine h, k, and l for each of the lines, but you can ignore the small peak at 35°. This is a K? peak. (c) Determine the lattice parameter of this material using the (321) peak.
An observer measures the North Star (Polaris) at an altitude of 30°. The observer's latitude is
a. 40°N. b. none of these. c. 60°N. d. 30°N.
A baseball is thrown and lands 120 m away. While the ball is in flight, assuming the effect of air friction is negligible, which of the following is true?
a. At maximum height the ball has its greatest kinetic energy. b. The horizontal component of the baseball's kinetic energy is constant. c. The vertical component of the baseball's kinetic energy is constant. d. The mechanical energy of the baseball is greater when nearer to the ground. e. No answer above is correct.
How is L determined if it is greater than 0.6 m?
What will be an ideal response?