At room temperature (68°F) a steel sphere (ball) with a diameter of 25cm rests on an aluminum ring of dimeter 24.75cm. Which one do I heat in order to have the ball pass through the ring? What temperature will it need to be?

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.