The strong force is to gluons as the gravitational force is to
A) Z particles. B) quarks. C) photons. D) gravitons. E) neutrinos.
D
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A person is dragging a packing crate of mass 100 kg across a rough horizontal floor where the coefficient of kinetic friction is 0.400. He exerts a force F sufficient to accelerate the crate forward
At what angle above horizontal should his pulling force be directed in order to achieve the maximum acceleration? A) 21.8° B) 27.7° C) 30° D) 34.5° E) 45°
Consider the motion of a 1.00-kg particle that moves with potential energy given by U(x) = (-2.00 J ? m)/x + (4.00 J ? m2)/x2. Suppose the particle is moving with a speed of 3.00 m/s when it is located at x = 1.00 m
What is the speed of the object when it is located at ? A) 2.13 m/s B) 3.00 m/s C) 4.68 m/s D) 3.67 m/s
The larger variation in brightness in an eclipsing system consisting of a white dwarf and an M3 main-sequence star occurs when the white dwarf passes behind the M3 star
a. True b. False Indicate whether the statement is true or false
The total energy radiated by a blackbody depends on
A) the square of its temperature. B) the fourth power of its temperature. C) the fourth root of its temperature. D) the square root of its temperature. E) the cube of its temperature.