_________ in our atmosphere is a direct consequence of the emergence of life.
a. Carbon dioxide
b. Water vapor
c. Nitrogen
d. Oxygen
e. Helium
d. Oxygen
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Matter Waves: A proton and an electron are both accelerated to the same final kinetic energy. If ?p is the de Broglie wavelength of the proton and ?e is the de Broglie wavelength of the electron, then
A. ?p > ?e. B. ?p = ?e. C. ?p < ?e.
Describe some of the features of Mercury's surface and briefly explain how these features are believed to have formed
What will be an ideal response?
A catapult fires an 800-kg rock with an initial velocity of 100 m/s at a 40° angle to the ground. The magnitude of the vertical impulse the catapult receives from the rock is
A.
s.B.
s.C.
s.D.
s.E.
s.In an AC series circuit the capacitive reactance is 217 ? and frequency is 56 Hz. What is the capacitance?
a. 2.62E–5 F b. 8.23E–5 F c. 1.31E–5 F d. 1.85E–5 F e. 3.71E–5 F