Physics, 20.12.2020 14:00 TwentyOnePawPrints21
True or False. Explain. The sound that comes from a longer flute( musical instrument) is stronger than the one of a shorter one.
Answers: 2
Physics, 22.06.2019 11:00
The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.
Answers: 3
Physics, 22.06.2019 13:00
Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?
Answers: 3
Physics, 22.06.2019 13:30
6β43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.
Answers: 2
Physics, 22.06.2019 14:30
Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules
Answers: 2
True or False. Explain.
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