A car travels in a due northerly direction at a speed of 55 km/h. The traces of rain on the side windows of the car make an angle of 60 degrees with respect to the horizontal. If the rain is falling vertically with respect to the earth, what is the speed of the rain with respect to the earth?
a. 48 km/h
b. 95 km/h
c. 58 km/h
d. 32 km/h
e. 80 km/h
B
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An object is moving with constant non-zero velocity in the +x-axis. The velocity versus time graph of this object is
A) a horizontal straight line. B) a vertical straight line. C) a straight line making an angle with the time axis. D) a parabolic curve. E) a hyperbolic curve.
The magnitude of a vector can be less than the magnitude of one of its components
Indicate whether the statement is true or false
Briefly describe the three most commonly used methods of indirect planet detection
What will be an ideal response?
This diagram represents a star with an orbiting planet that, as seen from Earth, periodically transits across the face of the star and disappears behind the star. If you measure the brightness of this system, at which point would it be brightest?
A) Point 1 B) Point 2 C) Point 3 D) Point 4