Answers: 2
Physics, 21.06.2019 22:20, CM0
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 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage
Answers: 2
Physics, 22.06.2019 09:00, SisterMina
The material that keeps its new shape after it is stretched is called?
Answers: 1
Physics, 22.06.2019 15:50, ksiandua07
An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )
Answers: 1
Physics, 22.06.2019 16:30, yagalneedshelp8338
Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same
Answers: 1
A stone is dropped from a 75-m- high building . When this stone has dropped 15 m, a second stone is...
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