Magnetic fields can deflect ______________ charges
Fill in the blank(s) with correct word
moving
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General Questions: An object of weight W is in freefall close to the surface of Earth. The magnitude of the force that the object exerts on Earth is
A. greater than W. B. less than W. C. equal to W. D. zero. E. cannot be determined without knowing the relative masses of the object and the earth.
A 0.20-kg mass is oscillating on a spring over a horizontal frictionless surface. When it is at a displacement of 2.3 cm for equilibrium it has a kinetic energy of 1.5 J and a spring potential energy of 2.3 J. What is the maximum speed of the mass during its oscillation?
a. 4.4 m/s b. 0.16 m/s c. 6.2 m/s d. 4.8 m/s e. 3.0 m/s
Because of refraction, a person standing waist deep in a swimming pool appears to have
A) shorter legs. B) longer legs. C) thinner legs. D) none of the above
Rays that go through the focal point to a concave mirror return:
a. back on themselves. b. parallel to the optic axis. c. perpendicular to the optic axis. d. at many different angles from the mirror surface. e. at many different angles relative to the optic axis.