Which of the following would be considered basic research?
A) examining why a mouse likes cheddar cheese more than swiss cheese
B) studying ways of catching mice safely
C) testing the strength of a mouse cage
D) examining how quickly a trapdoor closes
E) testing a safe, nontoxic mouse glue
Answer: A
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An acceleration may result from
a. a change in speed. b. a change in direction. c. a change in both speed and direction. d. all of these
Explain how the eye and a camera differ in adjusting for a change in focus
What will be an ideal response?
The buoyant force on an object is least when the object is
A) partly submerged. B) submerged near the surface. C) submerged near the bottom. D) none of the above
A uniform solid sphere is rolling without slipping along a horizontal surface with a speed of 5.50 m/s
when it starts up a ramp that makes an angle of 25.0° with the horizontal. What is the speed of the sphere after it has rolled 3.00 m up the ramp, measured along the surface of the ramp? A) 4.01 m/s B) 8.02 m/s C) 1.91 m/s D) 2.16 m/s E) 3.53 m/s