What causes the Coriolis force?
a. The increase in the speed the surface you stand on moves as you increase the radius on a rotating platform.
b. The tendency to continue moving in a straight line on a rotating platform.
c. The outward force of rotation on a moving platform.
d. The force exerted by the platform to keep you moving when stay at the same radius.
e. The reaction force that acts on you from the rotating platform.
a
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Rotational Kinetic Energy: A wheel having a moment of inertia of 5.00 kg ? m2 starts from rest and accelerates under a constant torque of 3.00 N ? m for 8.00 s. What is the wheel's rotational kinetic energy at the end of 8.00 s?
A. 57.6 J B. 64.0 J C. 78.8 J D. 122 J
A long hollow cylindrical conductor (inner radius = 2.0 mm, outer radius = 4.0 mm) carries a current of 24 A distributed uniformly across its cross section. A long wire which is coaxial with the cylinder carries an equal current in the opposite direction. What is the magnitude of the magnetic field 3.0 mm from the axis?
A. 0.82 mT B. 0.93 mT C. 0.70 mT D. 0.58 mT E. 0.40 mT
Imagine a steel pipe that doesn't leak from the sides and is already filled with water. Water enters at a rate of 2 kg/s but leaves at a rate of 1 kg/s. Which of the following is true?
A. The water pressure inside the tube rises as water is added B. The water flow must be laminar C. The tube is narrower where the water enters than where it leaves D. It is not possible for this situation to occur
According to the law of reflection of light, the angle of incidence is
A) equal to the angle of reflection. B) smaller than the angle of reflection. C) greater than the angle of reflection.