An airplane flies between two points on the ground that are 500 km apart. The destination is directly north of the origination of the flight
The plane flies with an air speed of 120 m/s. If a constant wind blows at 10.0 m/s due west during the flight, what direction must the plane fly relative to north to arrive at the destination?
A) 4.78° west of north
B) 4.76° east of north
C) 4.78° east of north
D) 4.76° west of north
E) 85.2° west of north
C
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A horizontal force is applied to a 2.0 kg box. The box starts from rest, moves a horizontal distance of 12.0 meters, and obtains a velocity of 8.0 m/s. The change in the kinetic energy is
A. 32 J. B. 48 J. C. 50 J. D. 58 J. E. 64 J.
Which of the following effects is caused by atmospheric turbulence?
A) twinkling of stars B) light pollution C) magnification of images D) diffraction of light
When the number of turns in a solenoid and its length are both doubled, the ratio of the magnitude of the new magnetic field inside to the magnitude of the original magnetic field inside is:
a. 0.25 b. 0.50 c. 1 d. 2 e. 4