Two spheres of masses 52 kg and 3,9 kg areconnected by a rigid mass-less rod of red length 54 cm look like a single object shown in the figure below which can move freely 20 in a plane. The moment of inertia (in kg m) of this object about an axis perpendicular lon to the plane passing through the center of mass is
Answers: 2
Physics, 22.06.2019 16:50, lizzepacheco
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, 23.06.2019 13:30, bmia7757
Acarpenter is driving a 15.0-g steel nail into a board. his 1.00-kg hammer is moving at 8.50 m/s when it strikes the nail. half of the kinetic energy of the hammer is transformed into heat in the nail and does not flow out of the nail. what is the increase in temperature of the nail after the three blows that the carpenter needs to drive the nail in completely? the specific heat of steel is 448 j/kg ∙ k. a) 2.7 k b) 1.8 k c) 7.7 k d) 8.1 k e) 3.6 k
Answers: 1
Physics, 23.06.2019 19:00, TheMixingToad
If a rock has a density of 2g/cm³ and a volume of 8cm³, what is its mass? a. 4 gb. 128 gc. 16 gd. 0.25 g
Answers: 1
Two spheres of masses 52 kg and 3,9 kg areconnected by a rigid mass-less rod of red length 54 cm loo...
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