A wave traveles through a medium. As the wave passes, the particles of the medium vibrate in a direction perpendicular to the direction of the wave's motion. The wave is:
a) longitudinal
b) a pulse
c) sine wave
d) transverse
Ans: d) transverse
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A 3.0 cm section of a horizontal wire carrying a 6.7 A current from east to west is placed in a north to south 0.42 T magnetic field in the lab. What is the magnitude of the force on the 3.0 cm section of the wire?
A. 0.084 N B. 0.17 N C. 0.25 N D. 0.0017 N E. 0.0025 N
A bow wave is produced in water when the speed of an object
A) matches the speed of waves in water. B) exceeds the speed of waves in water. C) is less than the speed of waves in water. D) none of the above
Velocity Addition: As shown in the figure, the captain of spaceship A observes spaceship E escaping with a relative velocity of 0.35c. A missile M is fired from ship A directly toward ship E, with a velocity of 0.76c relative to ship A. What does the captain of ship E measure for the velocity of the missile M?
A. 0.56c B. 0.41c C. 0.52c D. 0.48c E. 0.45c
A boy throws a rock with an initial velocity of at 30.0° above the horizontal. If air resistance is negligible, how long does it take for the rock to reach the maximum height of its trajectory?
A) 0.110 s B) 0.194 s C) 0.215 s D) 0.303 s