Inside a freely-falling elevator you would have no
A) gravitational force on you.
B) weight.
C) both of these
D) none of the above
Answer: B
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Translational (linear) speed is displacement divided by time, and rotational speed is:
a. the same thing. b. angular displacement divided by time. c. rotational acceleration divided by time. d. the distance along the edge of a rotating disk divided by time. e. translational speed divided by displacement.
Recall that an up quark (u) has a charge of +2/3 and a down quark (d) has a charge of ?1/3. Which of the following quark compositions describes a proton?
A) uud B) uuu C) udd D) uuudd
In a diffraction grating experiment, light of 600 nm wavelength produces a first-order maximum 0.350 mm from the central maximum on a distant screen
A second monochromatic source produces a third-order maximum 0.870 mm from the central maximum when it passes through the same diffraction grating. What is the wavelength of the light from the second source? A) 479 nm B) 497 nm C) 567 nm D) 749 nm E) 794 nm
The specific heat of ice is 2.10 kJ/kg 
the heat of fusion for ice at 0
is 333.7 kJ/kg, the specific heat of water 4.186 kJ/kg 
and the heat of vaporization of water at 100
is 2,256 kJ/ kg. What is the final equilibrium temperature when 30.0 grams of ice at -15.0
is mixed with 8.00 grams of steam at 100
?
A. 65.6
B. 60.2
C. 56.2
D. 50.1
E. 45.2