Rubidium (Z = 37) and potassium (Z = 19) are similar to sodium in that they have ____ electron(s) in the outermost shell
a. five p
b. three p
c. two s
d. one d
e. one s
e
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Starting from rest, a 2 kg body acquires a speed of 8 m/s in 2 seconds. The net force acting on the body is
a. 2 N b. 4 N c. 8 N d. 16 N e. 6 N
When we say that the speed of sound is measured under adiabatic conditions we assume that
a. the time associated with heat conduction is slow relative to the speed of the wave. b. no heat can flow between the system and its surroundings. c. the speed of the wave is directly proportional to the bulk modulus. d. the speed of the wave is proportional to the square root of the bulk modulus. e. air is an ideal gas.
Which of the following is considered by biologists to be a likely place where life might have first arisen on Earth?
A) in hot water near undersea volcanoes B) on meteorites that landed on Earth C) on land surfaces that got moderately heavy rainfall D) deep in Earth's core
A 120 N picture hangs from a nail in the wall. The maximum shear stress the nail can sustain is 1.00 
The smallest diameter the nail can be is
A. 10.5 mm. B. 12.4 mm. C. 13.7 mm. D. 14.4 mm. E. 15.9 mm.