Newton's Second Law in 1 Dimension: The figure shows an object's acceleration-versus-force graph. What is the mass of this object?
A. 2.5 g
B. 1.6 g
C. 630 g
D. 400,000 g
Answer: A
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Suppose you have three identical lightbulbs, some wire, and a battery. You connect one lightbulb to the battery and take note of its brightness. You add a second lightbulb, connecting it in series with the previous lightbulbs, and again take note of the brightness. Repeat the process with the third lightbulb, connecting it in series with the other two. As the lightbulbs are added, the power
delivered by the battery (neglect the battery’s internal resistance) 1.increases. 2.decreases. 3.remains the same. 4.Need more information.
Which fact about Mars is true?
A. There are no volcanoes on Mars. B. No spacecraft has ever landed on Mars. C. There was never water on the surface of Mars. D. It is always warmer than freezing on Mars surface. E. Mars has a thinner atmosphere than Earth does.
Phil Physiker standing at the edge of a cliff throws one ball straight up and another ball straight down, both with the same speed. Both balls hit the ground at
A) different speeds. B) the same speed in the same time. C) the same speed in different times. D) none of the above
A charged capacitor is connected to an ideal inductor to form an LC circuit with a frequency of oscillation f = 1.6 Hz. At time t = 0 the capacitor is fully charged
At a given instant later the charge on the capacitor is measured to be 3.0 ?C and the current in the circuit is equal to 75 ?A. What is the maximum charge of the capacitor? A) 6.0 µC B) 10 µC C) 8.0 µC D) 2.0 µC E) 4.0 µC