The magnetic flux through a loop perpendicular to a uniform magnetic field will change
a. if the loop is replaced by two loops, each of which has half of the area of the original loop.
b. if the loop moves at constant velocity while remaining perpendicular to and within the uniform magnetic field.
c. if the loop moves at constant velocity in a direction parallel to the axis of the loop while remaining in the uniform magnetic field.
d. if the loop is rotated through 180 degrees about an axis through its center and in the plane of the loop.
e. in none of the above cases.
d
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Constant Acceleration Kinematics: A cart starts from rest and accelerates uniformly at 4.0 m/s2 for 5.0 s. It next maintains the velocity it has reached for 10 s. Then it slows down at a steady rate of 2.0 m/s2 for 4.0 s. What is the final speed of the car?
A. 20 m/s B. 16 m/s C. 12 m/s D. 10 m/s
The subscript ______ stands for ________ to remind you that only information on visible light is given
Fill in the blank(s) with correct word
The luminosity of the white dwarf supernova 175 days after it reaches peak brightness is about ________ of its luminosity at peak brightness.
A) 30% B) 10% C) 3% D) 1%
The average speed of stars relative to the Sun in the solar neighborhood is about 20 km/s. Suppose you discover a star in the solar neighborhood that is moving relative to the Sun at a much higher speed, say, 200 km/s
What kind of orbit does this star probably have around the Milky Way? In what part of the galaxy does it spend most of its time? Explain.