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Q. A copper block rests 25.5cm from the center of a steel turntable. The coefficient of static friction between block and surface is 0.52. The turntable starts from rest and rotates with a constant angular acceleration of 0.475 rad/s2. After what time interval would the block start to slip on the turntable?

Q. Find the final equilibrium temperature when 10 g of milk at 10 Degrees C is added to a 1.60 x 10^2 g of coffee with a temperature of 90 Degrees C. Assume the specific heats of coffee and milk are the same as for water (Cp,w = 4.19J/g*C), and disregard the heat capacity of conantainer.

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