The creation of elements inside a star is called _______________
a. nucleosynthesis
b. fission
c. production
d. transmutation
a
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The brakes in a car work because of
a. Archimedes' principle. b. Pascal's principle. c. Bernoulli's principle. d. Torricelli's principle. e. none of these principles.
The internal energy of an ideal gas is changed by adding heat Q to the system and also by doing work W on the gas. What is the change in internal energy of the gas?
A) 4.186Q - W B) Q - 4.186W C) W - Q D) Q + W E) Q - W
Monochromatic light (l = 500 nm) is incident on a soap bubble (n = 1.4) that is 50 mm thick. What is the change of phase of the light reflected from the front surface?
a. 0 b. 180° c. l/2 d. p/2 e. 55°
A machine gun, of mass 35. kg, fires 50. gram bullets, with a muzzle velocity of 750. m/s, at the rate of 300. rounds per minute. What is the average force exerted on the machine gun mount?
What will be an ideal response?