A body on the surface of the earth weighs 400 lb. The radius of the earth is about 4,000 miles. If this same body were placed on a 4,000 mile high tower, its weight would be
a. 100 lbs
b. 200 lbs
c. 400 lbs
d. 800 lbs
e. 16,000 lbs
A
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Which theory best describes today's current thinking about the birth of a solar system?
a. Big Bang theory b. Solar Nebular theory c. Condensation theory d. Theory of Relativity e. Passing star theory
Propped cantilever beam AB has moment M1 applied at joint B. Framework ABC has moment M2 applied at C. Both structures have con-stant flexural rigidity EI. If the ratio of the applied moments M1/M2 5 3/2, the ratio of the reactive moments MA1/MA2 at clamped support A is approximately:
(A) 1
(B) 3/2
(C) 2
(D) 5/2
The symbol indicating the mass number of a nucleus is A
a. True b. False Indicate whether the statement is true or false
A single thin slit forms a diffraction pattern, with the first minimum at an angle of 40.0° from central maximum
If monochromatic light of 530.0-nm wavelength is used for the illumination, what is the width of the slit? A) 825 nm B) 791 nm C) 757 nm D) 723 nm E) 689 nm