Physics, 29.11.2019 02:31 spooderfaxy7813
Global warming is a cause for concern because even small changes in the earth's temperature can have significant consequences. for example, if the earth's polar ice caps were to melt entirely, the resulting additional water in the oceans would flood many coastal areas. would it appreciably change the length of a day? calculate the resulting change in the duration of one day. model the polar ice as having mass 2.30x10^19 kg and forming two flat disks of radius 6.00x10^5 m. assume the water spreads into an unbroken thin, spherical shell after it melts. calculate the resulting change in the duration of one day both in seconds and as a percentage.
Answers: 1
Physics, 21.06.2019 19:20
Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?
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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
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