The electric force between charges is strongest when the charges are
A) close together.
B) far apart.
C) either of these
Answer: A
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State the law of conservation of total energy
What will be an ideal response?
When a car is weighed, it is driven slowly on a horizontal floor over a scale that records a reading as the front wheels go over the scale, and then records a second reading as the rear wheels go over the scale. The weight of the car is equal to
A) the sum of the two weights. B) the weight under the rear wheels. C) the weight under the front wheels. D) the difference of the two weights. E) the average of the two weights.
Since the mass of an object is the same for all observers, it is a relativistically ____________ quantity
Fill in the blank(s) with correct word
To see his full height, Blinky Bill who is 1.0 meter tall needs a mirror that is at least
A) 0.33 m tall. B) 0.50 m tall. C) 0.75 m tall. D) 1 m tall. E) depends on distance from the mirror.