Mass on a Spring: A 1.15-kg beaker (including its contents) is placed on a vertical spring scale. When the system is sent into vertical vibrations, it obeys the equation y = (2.3 cm)cos(17.4 s-1 t). What is the force constant (spring constant) of the spring scale, assuming it to be ideal?
Fill in the blank(s) with the appropriate word(s).
348 N/m
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Pressure is uniform (a constant) on what surfaces of this box of fluid?
a. On the bottom and on the top. b. On each of the four vertical sides. c. It is uniform throughout volume of fluid. d. On no surface of the fluid. e. On the top only.
A solid nonconducting sphere of radius R carries a uniform charge density throughout its volume. At a radial distance r1 = R/4 from the center, the electric field has a magnitude E0. What is the magnitude of the electric field at a radial distance r2 = 2R?
A) E0/4 B) zero C) E0/2 D) E0 E) 2E0
The most circular of the elliptical galaxies are class
A. Sb. B. E7. C. Irr 1. D. E0. E. Ea.
An ideal gas is allowed to expand slowly at constant temperature to twice its original volume. During the expansion, the gas absorbs 200 kJ of heat
(a) What is the change in the internal (thermal) energy of the gas during the expansion? (b) How much work does the gas do during the expansion?