On the moon, the maria have fewer craters than the highlands
Indicate whether the statement is true or false
T
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All the following statements are true. Which one explains why mean solar time differs from apparent solar time?
A) The length of a solar day is not always exactly 24 hours. B) Earth's rotation period is actually about 23 hours and 56 minutes, not 24 hours. C) Earth's axis precesses with a period of about 26,000 years. D) The Sun reaches the meridian at different times at different longitudes within the same time zone. E) The path of the Sun through the sky depends on both latitude and date.
When a car is struck by lightning, the resulting electric field inside the car is
A) normally huge, but for a brief time. B) small enough to be safe for a passenger inside. C) zero.
An object is moving with constant non-zero acceleration along the +x-axis. A graph of the velocity in the x direction as a function of time for 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.
A car's initial velocity is 50.0 km/h in the direction 60.0° north of east, and its final velocity is 70.0 km/h in the direction 40.0° south of east. If the time period for this journey is 30.0 minutes, what is the magnitude of the car's average acceleration?
a. 186 km/h/h b. 240 km/h/h c. 92.8 km/h/h d. 3.94 km/h/h