Photos of Jupiter's rings show that they are very bright when they are scattering light backward
Indicate whether the statement is true or false
False
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Current: A jeweler needs to electroplate gold, having an atomic mass of 196.97 g/mol, onto a bracelet. He knows that the charge carriers in the ionic solution are singly-ionized gold ions, Au+, and has calculated that he must deposit 0.20 g of gold to reach the necessary thickness. How much current does he need to plate the bracelet in 3.0 hours? (e = 1.60 × 10-19 C, NA = 6.02 × 1023 atoms/mol)
A. 9.1 mA B. 540 mA C. 33 A D. 1800 mA
Why are sound waves not polarizable?
a. Because they are not electromagnetic. b. They are not transverse. c. They are not longitudinal. d. But this is readily possible!
Standing Sound Waves: An pipe of length L that is open at both ends is resonating at its fundamental frequency. Which statement about the sound is correct?
A. The wavelength is 2L and there is a displacement node at the pipe's midpoint. B. The wavelength is 2L and there is a displacement antinode at the pipe's midpoint. C. The wavelength is L and there is a displacement node at the pipe's midpoint. D. The wavelength is L and there is a displacement antinode at the pipe's midpoint.
A nonprismatic cantilever bar has an internal cylindrical hole of diameter d/2 from 0 to x, so the net area of the cross section for Segment 1 is (3/4)A. Load P is applied at x, and load 2P/2 is applied at x 5 L. Assume that E is constant. The length of the hollow segment, x, required to obtain axial displacement ? 5 PL/EA at the free end is:
(A) x 5 L/5
(B) x 5 L/4
(C) x 5 L/3
(D) x 5 3L/5