We determine the structure of the Earth's core using
A) deep mine shafts.
B) satellite imaging.
C) radar and sonar.
D) seismic wave data.
E) magnetic resonance imaging.
D
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When a drag strip vehicle reaches a velocity of 60 m/s, it begins a negative acceleration by releasing a drag chute and applying its brakes. While reducing its velocity back to zero, its acceleration along a straight line path is a constant -6.0 m/s2 . What displacement does it undergo during this deceleration period?
a. 120 m c. 320 m b. 300 m d. 240 m
A car is approaching a radio station at a speed of 25.0 m/s. If the radio station broadcasts at a frequency of 74.5 MHz, what change in frequency does the driver observe?
A) 98.3 Hz B) 6.21 Hz C) 726 Hz D) 67.0 Hz E) 64.5 Hz
A peregrine falcon dives at a pigeon. The falcon starts with zero downward velocity and falls with the acceleration of gravity. If the pigeon is 76.0 m below the initial height of the falcon, how long does it take the falcon to intercept the pigeon?