A 125 gram glass mug at 20 oC is filled with 200.0 grams of coffee at 90 oC. The final temperature of the coffee and mug reaches 83oC. Assuming that all heat lost by the coffee is transferred to the mug, what is the specific heat value for the coffee?

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20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity