Answers: 2
Physics, 22.06.2019 10:00
Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?
Answers: 1
Physics, 22.06.2019 15:30
How many neutrons does element x if itβs atomic number is 28 and its mass number is 87
Answers: 1
Physics, 22.06.2019 16:00
What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 βc/m.
Answers: 3
Physics, 22.06.2019 16:50
Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35Β°c by rejecting waste heat to cooling water that enters the condenser at 18Β°c at a rate of 0.25 kg/s and leaves at 26Β°c. the refrigerant enters the condenser at 1.2 mpa and 50Β°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: which action requires no work by a weightlifter? a.) lifting a weight from the floor to...
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