If Earth rotated once every 48 hours (instead of 24 hours), but everything else was the same, which of the following statements would be false?
A) There would still be summer and winter seasons.
B) The length of the year would be longer.
C) The Sun would appear to move across the sky at a slower rate.
D) The length of a day would be longer.
B) The length of the year would be longer.
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A) mass and velocity. B) mass, velocity, and radius. C) force and radius. D) force, velocity, and radius. E) momentum and angular velocity.
Does a magnetic field exert a force on a moving charged object? Assume the motion of the charged object is along the x axis and the field is in the y direction
1.yes 2.no
Magnetic Field of a Long Wire: Three very long, straight, parallel wires each carry currents of 4.0 A, directed out of the page as shown in the figure. These wires pass through the vertices of a right isosceles triangle as shown. Assume that all the quantities shown in the figure are accurate to two significant figures. What is the magnitude of the magnetic field at point P at the midpoint of the hypotenuse of the triangle? (?0 = 4? × 10-7 T ? m/A)
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