A lens with a focal length of 12 cm has what refractive power?
a. 5.0 diopters
c. 6.7 diopters
b. 9.6 diopters
d. 8.3 diopters
D
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How is the mass hung on the spring related to the force that actually stretches the spring?
Stars are born from the interstellar medium, and aging or dying stars return gas and dust back into the interstellar medium
a. True b. False Indicate whether the statement is true or false
When a net horizontal force of 250 N acts on a 50-kg cart that is free to roll on a level surface,
A. the cart accelerates at 12500 m/s2. B. the cart accelerates at 9.8 m/s2. C. the cart accelerates at 5 m/s2. D. the cart accelerates at 0.20 m/s2. E. the cart does not accelerate because it pushes back on the person with a force of 250 N.
The Moon contains small amounts of frozen water that is mixed in with its rocks.
Answer the following statement true (T) or false (F)