Explain Occam's Razor
What will be an ideal response?
Occam's Razor is the principle that says when two theories make the same predictions and explain the facts equally well, then the simpler one is better.
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A 3.50-kg block is pulled along a moving conveyor belt at a constant speed of 0.500 m/s relative to a stationary observer while the belt moves at a constant speed of 0.200 m/s in the opposite direction. If the coefficient of kinetic friction is 0.400, the magnitude of the mechanical energy dissipated, in J, caused by the force of friction on the block in 8.00 s is
A. 5.6. B. 22.0. C. 32.9. D. 54.8. E. 76.8.
what are the two forces that compete with each other to determine the ultimate fate of a star?
What will be an ideal response?
The main sequence has a limit at the lower end because
a. low mass stars form from the interstellar medium very rarely. b. low mass objects are composed primarily of solids, not gases. c. pressure does not depend on temperature in degenerate matter. d. the lower limit represents when the radius of the star would be zero. e. there is a minimum temperature for hydrogen nuclear fusion (the definition of a star).
Where on the H-R diagram are the majority of stars that dominate the night sky?
What will be an ideal response?