The rotation of the magnetic fields of the jovian planets is believed to also give us the rotation rate of the planet's core
Indicate whether the statement is true or false
TRUE
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On Mars, the acceleration due to gravity is 8 m/s/s. If an object is dropped over the surface of Mars, how fast will it be moving at the end of 3 seconds of fall?
A) 32 m/s B) 72 m/s C) 16 m/s D) 24 m/s E) 8 m/s
An object is placed at the focal point of a converging lens and the light rays from the lens will be parallel to the principal axis. The object is now moved closer to the lens. Which statement is true about the light rays from the lens?
A. the will remain parallel to the principle axis B. they converge toward each other C. they emerge parallel to each other but not the principle axis D. they diverge from each other
Slanting Surfaces Without Friction: A 7.5-kg stone moves up frictionless hill that slopes upward at 41° above the horizontal. If the stone has an initial velocity of 8.5 m/s at the bottom, how far (as measured along the surface of the hill) will it go before stopping?
Fill in the blank(s) with the appropriate word(s).
If a negatively charged object is brought near a suspended, positively charged object, the suspended object will be
a. repelled. b. charged more. c. discharged. d. attracted.