Physics, 02.02.2020 20:46, genyjoannerubiera
Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 2.40 m/s; (b) he is then lifted at the constant speed of 2.40 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 84.0 kg rescue by the force lifting him during each stage?
Answers: 3
Physics, 21.06.2019 22:20, lunamoon1
The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?
Answers: 2
Physics, 22.06.2019 00:30, torrejes241
In positive numbers less than 1, the zeros between the decimal point and non zero are significant
Answers: 2
Physics, 22.06.2019 11:30, ramirezzairap2u4lh
Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)
Answers: 3
Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a mot...
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