One fine spring afternoon, you go outside to play a rousing game of hoop-and-stick. After a couple mighty blows, you find yourself sprinting alongside your hoop at 4.5 m/s. If your hoop rolls without slipping, what is the angular speed of the hoop? Your hoop has a diameter of 1m.

## What is the mass of the second ballA 0.360 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. |

## How far away is the mountain that reflected the sound waveA group of hikers hears an echo 1.50 s after shouting. If the temperature is 24.0°C, how far away is the mountain that reflected the sound wave |

## Determine the overall efficiency of plantFor a certain change, the value of ëU is -2.37 kJ. During the change, system absorbs 650 joules. How much work did the system do. |

## What slit separation required to desired interference pattenwhat slit separation required to desired interference patten. |

## Calculate the average radius of neptuneThe average density of the planet Neptune is 1644 kg/m3. The acceleration of gravity on its surface is 11.32 m/s2. Calculate the average radius of Neptune |

## What is the kinetic energy of the ball at the highest pointAn airplane has a mass of 20,000 kg and takes off under the control of a constant net force of 30,000 N. What is the net force that acts on the plane's 73 kg pilot. |

## Illustrate what is the velocity of each of the two skatersOne skater throws a .3 kg ball at 5 m/s to his friend, who catches it and throws it back at 5 m/s. When the first skater has caught the returned ball, Illustrate what is the velocity of each of the two skaters? |

## What is the cost of the electric energy equivalentwhat is the cost of the electric energy equivalent to the energy in a Big Mac? (the cost of a Big Mac is $3.57) |

## What is the total energy stored in this circuitA 5 uF capacitor is initially charged to a potential of 16 V. It is then connected in series with a 3.75 mH inductor. |

## Determine magnitude and direction of the electric field eFour protons, each with charge +e, are fixed at the corners of a square of side length a, Determine magnitude and direction of the electric field E |

## Find out the force exerted by the rope on the bucketA 51 crate, starting from rest, is pulled across a floor with a constant horizontal force of 250 . For the first 11.5 the floor is frictionless, and for the next 11.5 the coefficient of friction is 0.16. what's the final speed. |

## How fast something is moving and in direction it is movingassume that you are swimming in a river while a friend watches from the shore. In calm water, you swim at a speed of 1.25 rm m/s . The river has a current that runs at a speed of 1.00 rm m/s. |

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