What is the troposphere?
A. the layer of the atmosphere where the weather we experience is located
B. the layer of the atmosphere containing the ozone layer
C. the uppermost layer of the atmosphere
D. the layer of the atmosphere containing the aurora
E. None of these choices are correct.
Answer: A
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If an electron has a wavelength of 0.123 nm, what is its kinetic energy, in electron-volts? This energy is not in the relativistic region. (melectron = 9.11 × 10-31 kg, 1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s)
A) 19.8 eV B) 60.2 eV C) 80.4 eV D) 99.5 eV E) 124 eV
A man lifts a 20.0-kg bucket of concrete from the ground up to the top of a 30.0-m tall building. The bucket is initially at rest, but is traveling at 4.0 m/s when it reaches the top of the building
How much work was done by the man in lifting the bucket? A) 5.88 kJ B) 600 J C) 760 J D) 6.04 kJ E) 160 J
A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.If two slide projectors are connected in series across the same 120-volt source, the current drawn from the source is __________
Fill in the blank(s) with correct word
The inertia of a body is directly related to its
a) force. b) mass. c) velocity. d) volume.