Physics, 19.11.2019 23:31 theoriginalstal9245
Astone is dropped from the top of a building 122.5 meters above the ground. suppose the distance the stone travels from its starting point is described by s(t) = 4.9t², where t is in seconds. how fast is the stone traveling when it hits the ground?
Answers: 3
Physics, 22.06.2019 13:10
Most short-period comets do not have randomly oriented orbits because
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Physics, 22.06.2019 16:50
Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.
Answers: 2
Physics, 22.06.2019 17:40
The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.
Answers: 1
Astone is dropped from the top of a building 122.5 meters above the ground. suppose the distance the...
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