Questions asked by Janae

• Back to user's profile
• What is the angular velocity of the minute hand on a clock??
  
• A very fast horse can complete a 1500m race around a circular tram in a time of 92.2 seconds. What was the horse's average linear and average angular speeds?
  
• A disk has a mass 3.5 kg and radius 15 cm, rotating with angular speed 15 rev/s when a second disk of 5.0 kg is dropped onto it. If second disk has diameter 18 cm and mass 5.0 kg, what is the common final angular speed of the system?
  
• A bowling ball has a mass of 5.5 kg and a radius of 12 cm. It is released so that it rolls down alley at a rate of 12 rev/s. What's the magnitude if its angular momentum?
  
• F(x)= { 7 if 12<or=x<or=13 8 if 12<or=x<or=13 } ?????????
  
• A projectile is launched with an initial speed of Vo at an angle θ above the horizontal. It lands at the same level from which it was launched. What was the average velocity between launch and landing? Explain please because I can't understand this.
  
• Can you drive your car in such a way that your tangential acceleration is zero while at the same time your centripetal acceleration is nonzero? Give example or state why not.
  
• Two spheres have identical radii and masses. How might you tell which of these spheres is hollow and which is solid?
  
• When you stand on the observation deck of the Empire State Building in New York, is your linear speed due to the Earth's rotation greater than, less than, or the same as when you were on the ground floor?
  
• When the Hoover Dame was completed and the reservoir behind it filled with water, did the moment of inertia of the Earth increase, decrease, or stay the same?