One possible ingredient of dark matter is known as WIMPs, or weakly interacting massive particles. WIMPs probably are made of protons and neutrons
Indicate whether the statement is true or false
FALSE
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Gravitational lensing is caused by ____
a. refraction of light through hot intracluster gas b. stimulated emission of light passing through dark matter c. acceleration of photons by supermassive black holes d. scattering of photons off of thin intergalactic dust e. bending of light rays due to the curvature of space-time around a mass
A 6.00 kg mass is located at (1.0 m, –2.00 m, 3.00 m), a 5.00 kg mass is located at (1.0 m, 3.00 m, – 2.00 m), and a 4.00 kg mass is located at (–1.0 m, –2.00 m, 2.00 m). The center of gravity of the system of masses is
A. (5/15m, -1/15m, 17/15m). B. (5/15m, -17/15m, 5/15m). C. (12/15m, -5/15m, 16/15m). D. (7/15m, -5/15m, 16/15m). E. (16/15m, -1/15m, 17/15m).
If a guitar string has a fundamental frequency of 250 Hz, what is the frequency of its third harmonic?
a. 250 Hz c. 1000 Hz b. 750 Hz d. 1500 Hz
What virus is frequently transmitted by food handlers who are careless about hygiene?
What will be an ideal response?