A ring is fitted loosely (with no friction) around a long, smooth rod of length L = 0.561 m. The rod is fixed at one end, and the other end is spun in a horizontal circle at a constant angular velocity of ? = 3.57 rad/s. The ring has zero radial velocity at its initial position, a distance of r0 = 0.399 m from the fixed end. Determine the radial velocity of the ring as it reaches the moving end of the rod

Compared to the weight of the elevator-tension in the cable : Consider an elevator that is hanging from a strong cable. The elevator is initially at rest. It then accelerates upwards for 2 seconds, due to the cable pulling. It then then slows down, still moving upwards, until it comes to a stop. Pick out any.. |

Cylinder with height-inside diameter use to hold propane gas : A cylinder with a height of 1.30 and an inside diameter of 0.110 is used to hold propane gas (molar mass 44.1 ) for use in a barbecue. It is initially filled with gas until the gauge pressure reads 1.80×106 and the temperature is 22.0. The temperatur.. |

How much energy was lost in the collision : A 10 g bullet moving 1000 m/s strikes and passes through a 2.0-kg block initially at rest, as shown. The bullet emerges from the block with a speed of 400 m/s. (a) How much energy was lost in the collision? (b) Calculate the average force exerted on .. |

Find the X coordinate of Xcm of the center of mass : There is a system of three particles which have masses of M, 2M, and 3M as indicated M------2m------3m [----L----][----L----] find the X coordinate of Xcm of the center of mass. Assume that the particle M is at the origin and the positive x axis is d.. |

Determine radial velocity of ring as it reaches moving end : A ring is fitted loosely (with no friction) around a long, smooth rod of length L = 0.561 m. The rod is fixed at one end, and the other end is spun in a horizontal circle at a constant angular velocity of ? = 3.57 rad/s. The ring has zero radial velo.. |

What is the work done by the force of gravity : A 255 kg piano slides 4.2 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-36). The effective coefficient of kinetic friction is 0.40 Figure 6-36 |

What is the magnitude of the EMF in millivolts : An astronaut who is repairing the outside of her spaceship accidently pushes away a 98.9-cm-long steel rod, which flies off at 10.5 m/s, never to be seen again. As it happens, the rod is oriented perpendicularly to the magnetic field in that region o.. |

Find the work done by the dogs after pulling the sled : A 100 kg sled is slid across a smooth ice field by a group of four dogs tied to the sled pulling with a 350 N force along a rope at an angle of 20 degrees above the horizontal. (a) If the sled travels at a constant speed, find the drag force on the s.. |

What is the magnitude and direction of the velocity of m2 : A cart of mass m1 = 0.500 kg moves with a velocity of 0.900 m/s to the right on a frictionless track. It collides with another cart of mass m2 = 0.500 kg at rest. Car m1 stops and m2 moves in the direction that m1 was traveling. What is the magnitude.. |

## Distance from the horizontal top surface of the cubeA cube of wood having an edge dimension of 20.3 cm and a density of 647 kg/m3 floats on water. What is the distance from the horizontal top surface of the cube to the water level? |

## What is the magnitude of the force that the shopper exertsA person pushes a 19.6-kg shopping cart at a constant velocity for a distance of 27.3 m on a flat horizontal surface. What is the magnitude of the force that the shopper exerts |

## Compute the magnetic force on the armSodium ions (Na+) move at 0.843 m/s through a bloodstream in the arm of a person standing near a large magnet. what would be the magnetic force on the arm |

## Determine the change in the entropy of the waterA freezer is used to freeze 5.0 L of water completely into ice. The water and the freezer remain at a constant temperature of T = 0°C. Determine the change in the entropy of the water |

## How many revolutions must the proton makeA proton in Fermilab's Tevatron is accelerated through a potential difference 2.06 MV during each revolution around the ring of radius 1.00 km. how many revolutions must the proton make |

## How much force does the rope exert on the crateSally expends 10320 J of energy to drag a wooden crate 24.7 m across a floor with a constant speed. The rope makes an angle of 48.0° with the horizontal. How much force does the rope exert on the crate |

## Estimate the kinetic energy of the objectA 5 kg object is dropped from rest 2.5m above the ground. What is the kinetic energy of the object just before it hits the ground |

## Calculate the angle of the velocity vector of the packageAn airplane with a speed of 77.7 m/s is climbing upward at an angle of 45.5 ° with respect to the horizontal. Relative to the ground, determine the angle of the velocity vector of the package just before impact |

## How fast is the rock moving on impactA rock is dropped straight down from the top of a 49.2 meter building. How long does it take for the rock to hit the ground? How fast is the rock moving on impact |

## Explain how far west has the sailboat traveledExplain how far west has the sailboat traveled in 29 ? How far north has the sailboat traveled in 29? |

## What is your average speed for the entire tripSuppose you decide to take a trip in your car today. You start out and drive 32 miles in 20 minutes, What is your average speed for the entire trip including when you were parked |

## Which person is more likely to dent the floorA 400lb woman stands on a floor in flat soled shoes. A 130lb woman stands on the same floor in a high heel shoe with all her weight is on the heel of the shoe. Which person is more likely to dent the floor? |

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