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  1. M

    Power of a dental drill?

    A popular make of dental drill can operate at a speed of 44000 rpm while producing a torque of 3.98 oz/in. What is the power output of this drill? Give your answer in watts. How do I solve this?
  2. M

    Angular velocity, physics problem?

    A solid sphere with a diameter of 0.20m is released from rest; it then rolls without slipping down a ramp, dropping through a vertical height of 0.61m. The ball leaves the bottom of the ramp, which is 1.22m above the floor, moving horizontally. Through what horizontal distance does the ball...
  3. M

    How to find the launch angle?

    A certain projectile is launched with an initial speed of V1. At its highest point its speed is V1 / 6. I don't think there is enough info for me to find the launch angle? Anyone know how?
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