You are holding on to one end of a long string that is fastened to a rigid steel light pole. After producing a wave pulse that was 5 mm high and 4 cm wide, you want to produce a pulse that is 4 cm wide but 7 mm high. You must move your hand up and down once,
a. the same distance up as before, but take a shorter time.
b. the same distance up as before, but take a longer time.
c. a smaller distance up, but take a shorter time.
d. a greater distance up, but take a longer time.
e. a greater distance up, but take the same time.
e
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A(n) ____________________ telescope has an objective that is a lens
Fill in the blank(s) with correct word
Consider electrons flowing Southward along a horizontal power line. The magnetic field generated directly below the wire by the current is pointing
A) Eastward. B) Westward. C) Northward. D) Southward. E) upward.
The acceleration of a Tesla that maintains a constant velocity of 120 km/h over a time of one-half hour is
A) 60 km/h. B) 120 km/h. C) 240 km/h. D) zero because of no change in velocity.
A wheel (radius = 0.20 m) starts from rest and rotates with a constant angular acceleration of 2.0 rad/s2 . At the instant when the angular velocity is equal to 1.2 rad/s, what is the magnitude of the total linear acceleration of a point on the rim of the wheel?
a. 0.40 m/s2 b. 0.29 m/s2 c. 0.69 m/s2 d. 0.49 m/s2 e. 0.35 m/s2