The Miller experiment is important because:
A) it shows that complex organic molecules form naturally in a wide variety of circumstances.
B) it shows that complex organic molecules need optimum conditions for their formation.
C) it shows that lightning, sunlight, and hot lava pouring into the oceans can tremendously hinder the formation of complex molecules.
D) it shows that complex organic molecules can become extremely unstable in the presence of ultraviolet radiation.
A
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An ideal gas undergoes an adiabatic process while -25 J of work is done on it. What is the change in the internal (thermal) energy of the gas?
A) 0 J B) 25 J C) -25 J D) 50 J E) -50 J
A current I = 3 sin (400 t) amperes flows in a series RL circuit in which L = 1 mH and R = 100 ?. What is the average power loss?
a. 225 W b. 450 W c. 980 W d. 1.12 kW e. 900 W
A double-convex lens made of glass having a refractive index of 1.50 has a radius of magnitude 40 cm on the front side and one of magnitude 30 cm on the back side. What is the focal length of this lens?
A) 34 cm B) -240 cm C) 80 cm D) 11 cm E) -11 cm
If you pound a feather with a hammer, which one feels a greater force?
A) always the feather B) always the hammer C) The size of the force is always exactly the same on both of them. D) If the feather moves, then it felt the greater force. Otherwise the force was the same on both.