A fan blade, whose diameter is 1.0 m, is turning with an angular velocity of 2.0 rad/s. What is the tangential velocity of a point on the tip of the blade?
A) 2.0 m/s
B) 5.0 cm/s
C) 1.0 m/s
D) 0.50 m/s
E) 1.5 m/s
C
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Indicate whether the statement is true or false
Refer to the figure above showing the abundance of elements in the galaxy relative to hydrogen. What is the least abundant element with an atomic number less than iron's?
A) hydrogen B) lithium C) beryllium D) nitrogen
In a collision between two objects having unequal masses, how does magnitude of the impulse imparted to the lighter object by the heavier one compare with the magnitude of the impulse imparted to the heavier object by the lighter one?
A) The lighter object receives a larger impulse. B) The heavier object receives a larger impulse. C) Both objects receive the same impulse. D) The answer depends on the ratio of the masses. E) The answer depends on the ratio of the speeds.
A way to demonstrate to yourself that light is a wave is by
A) allowing light from two flashlights to strike a screen. B) observing light as it bends while passing from air into water. C) using a prism to separate light into its various components. D) allowing light to reflect from a mirror. E) observing the light that passes through a narrow space between your fingers.