An air bubble underwater has the same pressure as that of the water. As the air bubble rises toward the surface (and its temperature remains constant), the volume of the air bubble
A) increases.
B) decreases.
C) remains constant.
D) increases or decreases, depending on the rate it rises.
A
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A pendulum bob on a long string is raised 1.1 m above its lowest point. When it is let go, we can determine the speed of the bob as it passes through its lowest point even if we have no idea of its mass
What will be an ideal response?
A cable with known tension force T is anchored at C and passes over a frictionless drum (see figure). The pin force components Bx and By (in terms of cable force variable T) for the pin connection at B are:
(A) 2T, 2T
(B) 22T, T
(C) 2T, 2T
(D) 2T, 3T/2
What conditions are necessary for a total solar eclipse?
A) new moon on ecliptic near perigee B) full moon on ecliptic near aphelion C) new moon on equator at perigee D) full moon on equator at perigee E) new moon on ecliptic near aphelion
The rigid object shown is rotated about an axis perpendicular to the paper and through point P. The total kinetic energy of the object as it rotates is equal to 1.4 J. If M = 1.3 kg and L = 0.50 m, what is the angular velocity of the object? Neglect the mass of the connecting rods and treat the masses as particles.
A. 1.3 rad/s B. 1.5 rad/s C. 1.7 rad/s D. 1.2 rad/s E. 2.1 rad/s