How is Mimas responsible for the Cassini Division?
What will be an ideal response?
Mimas has an orbital period precisely twice that of matter in the Cassini Division. As such, it exerts a regular tug on particles there, pulling them to an orbit further out. The particles stay in the outer orbit once they collide with other particles and lose excess energy.
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The length of a certain wire is kept same while it's radius is doubled. What is the new resistance of this wire?
A deuteron has the same charge as an electron but approximately twice a proton's mass. Suppose deuterons are accelerated in a cyclotron in an orbit of 750. mm at a frequency of 8.00 MHz. What magnetic field is needed?
What will be an ideal response?
For a plane to be able to fly clockwise in a horizontal circle as seen from above, in addition to exerting a force downwards on the air
a. it must be increasing its speed. b. it must exert a force on the air that is directed to the plane's left side. c. it must exert a force on the air that is directed to the plane's right side. d. it does not need to exert a force: it must only move the wing flaps out. e. it only needs to deflect the air without exerting any additional force on the air.
Molten rock material on Earth's surface is called
a. magma. b. lava. c. pluton. d. silica.