What fraction of the visible matter in the Milky Way Galaxy disk is in the form of gas and dust (and not stars)?
A. 0.1 percent
B. 10 percent
C. 75 percent
D. 90 percent
E. 50 percent
Answer: B. 10 percent
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Starship "Alpha" travels at 0.9c past an identical starship "Beta," which is at rest. Both a cabin boy on the "Alpha" and a cook on the "Beta" measure the time required for the other ship to pass by their respective windows. Who measures the longer time?
A. The cabin boy B. Both measure the same time C. The measured times cannot be compared D. The cook
A 200-N crate rests on a ramp; the maximum angle just before it slips is 21° with the horizontal. What is the coefficient of static friction between crate and ramp surfaces?
a. 0.11 c. 0.38 b. 0.21 d. 0.47
State Newton's second law in terms of momentum
What will be an ideal response?
The splitting of a large nucleus into two smaller nuclei upon absorbing a neutron is nuclear fusion
Indicate whether the statement is true or false