A dry cell battery is no longer useful when its ________ (two words) becomes large.
Fill in the blank(s) with the appropriate word(s).
internal resistance
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According to the standard model of elementary particle physics, there are six flavors of quarks, each of which comes in three colors
a. True b. False Indicate whether the statement is true or false
The amount of gravitational potential energy released as an object falls depends on
A) its mass, the distance it falls, and the acceleration of gravity. B) its mass and its speed at the time it begins falling. C) its mass and its speed when it hits the ground. D) only its mass and the acceleration of gravity. E) only the acceleration of gravity.
When you stand in front of a convex mirror, the image you see is
a. real and inverted. b. real and upright. c. virtual and inverted. d. virtual and upright. e. real and inverted if your distance from the mirror is greater than two focal lengths.
Jim and Mary are carrying Bob on a horizontal stretcher. The uniform stretcher is 2.00 m long and weighs 80 N. Bob weighs 600 N. Bob's center of gravity is 80 cm from Mary. Jim and Mary are at the ends of the stretcher. The force that Jim is exerting to support the stretcher, with Bob on it, is
A. 280 N. B. 320 N. C. 380 N. D. 400 N. E. 520 N.