Suppose Earth collapsed down to one-hundredth [1/100] of its present radius. How would this affect your weight? Your weight would be
A) increased by a factor of 100.
B) increased by a factor of 1000.
C) increased by a factor of 10,000.
D) unchanged.
E) reduced by a factor of 100.
C
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Which force binds atoms together to form molecules?
A) gravitational B) nuclear C) electric D) centripetal E) none of the above
Mrs. Jones went on a diet and lost 15 kilograms. How many pounds did she lose?
A) 68 pounds B) 42 pounds C) 38 pounds D) 33 pounds E) 6.8 pounds
Buoyancy: A solid sphere of mass 8.6 kg, made of metal whose density is 3400 kg/m3, hangs by a cord. When the sphere is immersed in a liquid of unknown density, the tension in the cord is 38 N. The density of the liquid is closest to which one of the following values?
A. 1900 kg/m3 B. 1700 kg/m3 C. 1600 kg/m3 D. 1500 kg/m3 E. 1400 kg/m3
Visible light consists of electromagnetic waves with wavelengths (in air) in the range 400 - 700 nm. What are the frequencies of visible light?
a. 
b. 
c. 
d. 