State Pascal's Principle
What will be an ideal response?
Pressure applied to an enclosed fluid is transmitted undiminished to every point in the fluid and to the walls of the container.
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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.
If the surface temperature of the Earth is 290 K and that of the Sun is 6 000 K, assuming the same emissivities, what is the ratio of the energy radiated per square meter of the Earth to that of the Sun?
a. 0.48 b. 2.3 × 10^–3 c. 6.4 × 10^–5 d. 5.5 × 10^–6
An ionized atom having Z protons has had all but one of its electrons removed. If R is the radius of the ground state electron orbit in atomic hydrogen, then what is the radius of the shell of the remaining electron in the ionized atom?
A) R B) R/Z2 C) ZR D) Z2R E) R/Z
A charged particle moving perpendicular to a magnetic field has a magnet force on it. But when an observer moves with the particle, so that the particle has a relative velocity of zero with respect to the observer, one would expect there would be no magnetic force. Yet there is still a force. If it is not a magnetic force, then what is the source of this force?
a. It is an electrical force. b. It is due to the ether. c. It is a gravitational force. d. It is something other than any of the above.