Occurs on a planet or moon because the axis of rotation remains tilted in one direction during its orbit about its star
Answer: Seasons
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A ball is thrown straight up with a speed of 30.0 m/s. What is the maximum height reached by the ball?
A. 132 m B. 92.0 m C. 45.9 m D. 21.3 m
Two radio antennas are 120 m apart on a north-south line, and they radiate in phase at a frequency of 3.4 MHz
All radio measurements are made far from the antennas. If the east-west reference line passes midway between the two antennas, what is the smallest angle from the antennas, measured north of east, at which constructive interference of two radio waves occurs? (c = 3.00 × 108 m/s) A) 30° B) 47° C) 43° D) 68° E) 22°
A student has two diffraction gratings, a measuring tape, a monochromatic light source of unknown wavelength, and a clamp a known distance L from the white wall to be used as a screen. One diffraction grating has a known distance d1 between slits; the other has the unknown distance we will call d2. To find the distance d2, the student must take which data?
1.measure the distance from the central maximum to the first order maximum while the first diffraction grating is in the clamp 2.measure the distance from the central maximum to the first order maximum while the second diffraction grating is in the clamp 3.both of these choices 4.None of these choices—there are too many unknowns to find the distance in question.
A billiard ball traveling at 3.00 m/s collides perfectly elastically with an identical billiard ball initially at rest on the table. The initially moving billiard ball deflects 30.0°
What is the speed of the initially stationary billiard ball after the collision? A) 2.00 m/s B) 0.866 m/s C) 1.50 m/s D) 2.59 m/s E) 0.750 m/s