If object A has more mass than object B,
a. A will weigh more than B.
b. A will be harder to accelerate than B.
c. A will be harder to keep moving in a circle.
d. all of the above
d
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A box slides across a floor and comes to rest. The work done by the frictional force on the box is a. positive
b. negative. c. zero. d. impossible to determine without knowing the coefficient of friction.
The proton-proton chain requires a temperature of 100 million K to get started
Indicate whether the statement is true or false
The distinguishing feature of a starburst galaxy is ________
A) strong radio emission from "lobes" of material well outside the visible boundaries of the galaxy B) a very large luminosity compared to the total luminosity of the Milky Way C) a rate of star formation that may be 100 or more times greater than that in the Milky Way D) the presence of an unusually large number of binary star systems containing X-ray bursters
Uniform Electric Fields: Two isolated copper plates, each of area 0.40 m2, carry opposite charges of magnitude 7.08 × 10-10 C. They are placed opposite each other in parallel alignment, with a spacing of 4.0 cm between them. What is the potential difference between the plates? (?0 = 8.85 × 10-12 C2/N ? m2)
A. 0.40 V B. 3.0 V C. 3.2 V D. 7.6 V E. 8.0 V