Which of the following is true of S waves?
A) They travel faster than P waves.
B) They can penetrate liquid.
C) They are not transverse.
D) They cannot pass through Earth's core.
D
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Consider the motion of a 1.00-kg particle that moves with potential energy given by U(x) = -(2.0 J?m)/x + (4.0 J?m2)/x2. Suppose the particle is moving with a speed of 3.00 m/s when it is located at x = 1.00 m
What is the speed of the object when it is located at x = 5.00 m? A) 2.13 m/s B) 3.00 m/s C) 4.68 m/s D) 3.67 m/s E) This question cannot be answered. You need to know the direction of the velocity, not just the speed, when the particle is located at x = 1.00 m.
The Earth's escape velocity is defined to be the
A) minimum orbital speed for the Moon to escape from the Earth's gravity B) minimum orbital speed for the Earth to escape from the Sun's gravity C) minimum velocity required for an object to escape the Earth's gravity D) velocity that objects are pulled toward the Earth's surface by gravity
A catcher stops a 0.15-kg ball traveling at 40 m/s in a distance of 20 cm. What is the magnitude of the average force that the ball exerts against his glove?
What will be an ideal response?
If you move in the direction in which gravity acts, an observer at rest sees your watch running
A) slower than at your starting point. B) faster than at your starting point. C) neither of these