You want the freezer to convert 10.6 kg of water at 21.0°C to 10.6 kg of ice at −9.7°C in 2.00 h. The power rating of the freezer must stay below 100 W. From these requirements, determine the minimum COP of the freezer that will satisfy the conditions. (Consider that the specific heat of water is 4,186 J/(kg · °C), the specific heat of ice is 2,090 J/(kg · °C), the latent heat of fusion of water is 3.33 ✕ 105 J/kg, and the latent heat of vaporization of water is 2.26 ✕ 106 J/kg.Physics2 months ago
Solve the given differential equation by undetermined coefficients.
y'' − 2y' + 37y = ex cos(6x)2 AnswersMathematics8 months ago
A mass (m= 5.0 kg) hangs vertically connected by a light cord to a mass M = 6.0 kg, which slides on a smooth surface ramp up a 25 degree..?
A mass (m= 6.0 kg) hangs vertically connected by a light cord to a mass M = 7.0 kg, which slides on a smooth surface ramp up a 25 degree incline. The pulley (a solid disk, I=1/2 mR^2 ) rotates about a frictionless axle and has a radius R = 0.14 m and a mass of 4 kg . The cord does not slip on the pulley. What is the magnitude of the tension in the vertical part of the cord (connected to the smaller mass)Physics8 months ago