Q. How many kilograms of water at 25 degrees celcius must come to thermal equilibrium with a 3.0kg gold bar at 99 degress celcius in order to lower the bar's temperature to 47 degrees celsius?
Q. A race car starts from rest on a circular track. The car increases its speed at a constant rate at as it goes once around the track. Find the angle that the total acceleration of the car makes-with the radius connecting the center of the track and the car-at the moment the car completes the circle.