When two solid spheres of the same material and same radius r are in contact, the magnitude of the gravitational force each exerts on the other is directly proportional to
a. r.
b. r2.
c. r3.
d. r4.
e. r6.
d
Physics & Space Science
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A simply supported beam is loaded as shown in the figure. The bending moment at point C is approximately:
(A) 5.7 kN?m
(B) 6.1 kN?m
(C) 6.8 kN?m
(D) 9.7 kN?m
Physics & Space Science
A 20-solar-mass star will stay on the main sequence for 10 million years, yet its iron core can exist for only a
A) day. B) week. C) month. D) year. E) century.
Physics & Space Science
The deviation from the way a compass needle points from the true north direction is the
a. greenhouse effect. b. magnetic inclination. c. magnetic declination. d. magnetic resonance effect. e. none of the above
Physics & Space Science
It is not possible to increase the efficiency of thermal power plants because of thermodynamics
What will be an ideal response?
Physics & Space Science