The gravitational force, the electromagnetic force, and the strong nuclear force are ______ range,_______ range, and _______ range, respectively.
A. short, long, long
B. short, short, long
C. short, short, short
D. long, short, short
E. long, long, short
E. long, long, short
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The different species of finches found on the Galapagos islands are evidence of Darwin's theory of natural selection because
A) all species are competing for the same resources B) they are capable of interbreeding with each other C) they have all evolved adaptations from a common ancestor to suit the environmental conditions found on different islands D) some species are more successful than others
An ice cube of mass 100 g and at 0°C is dropped into a Styrofoam cup containing 200 g of water at 25°C. (The latent heat of fusion of water is 80 cal/g and the specific heat capacity of water is 1.0 cal/g C°.) Assuming the cup does not exchange any heat with the outside, what will happen?
A. All of the ice will melt B. Nothing will happen C. All of the water will freeze D. Some of the ice will melt E. Some of the water will freeze
The diameter of the Moon is 3.78 × 106 m. It subtends an angle of 0.00982 radians at the surface of Earth. How far is the Moon from Earth?
What will be an ideal response?
If a two-body collision is not head-on, then we may always assume that:
a. momentum is conserved. b. kinetic energy is conserved. c. neither momentum nor kinetic energy are conserved. d. both momentum and kinetic energy are conserved.