Physics, 19.10.2021 17:00 isabelacarraler
On an ice rink, two skaters of equal mass grab hands and spin in a mutual circle once every 2.9 s .If we assume their arms are each 0.85 m long and their individual masses are 61.0 kg , how hard are they pulling on one another?Express your answer to two significant figures and include the appropriate units.
Answers: 3
Physics, 22.06.2019 16:40, jcblake
Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.
Answers: 2
Physics, 23.06.2019 01:10, paige3673
Aheat engine that operates on a carnot cycle has an efficiency of 0.420 when its low-temperature reservoir is at 10 ∘c. part aby how many degrees celsius must you increase the temperature of the high-temperature reservoir to increase the efficiency to 0.600 if you continue to use the same low-temperature reservoir?
Answers: 1
On an ice rink, two skaters of equal mass grab hands and spin in a mutual circle once every 2.9 s .I...
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