In a closed universe, if you could send out a powerful enough light, it would eventually return from behind you
Indicate whether the statement is true or false
TRUE
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Heat is added to a 2.0 kg piece of ice at a rate of 793.0 kW. How long will it take for the ice to melt if it was initially at 0.00°C? (The latent heat of fusion for water is 334 kJ/kg and its latent heat of vaporization is 2260 kJ/kg.)
A) 0.84 s B) 530,000 s C) 4.7 s D) 670 s
What did the Michelson—Morley experiment demonstrate?
A) The speed of light that we observe is not affected by Earth's motion around the Sun. B) The speed of light that we observe is different depending on the time of year. C) The speed of light that we observe is not affected by the gravity of the Moon. D) The speed of light that we observe is not affected by the medium in which it travels.
Impedance is the total, or effective, opposition to current that takes into account both resistances and reactances
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The force constant of HCl is 480 N/m. If the atomic masses are 1 u and 35 u (1 u = 1.66 × 10^?27 kg), find the fundamental frequency (in Hz)
a. 6.4 × 10^13 b. 9.2 × 10^13 c. 7.7 × 10^13 d. 8.7 × 10^13 e. 1.4 × 10^13