A 20-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 35 N. Starting from rest, the sled attains a speed of 2.6 m/s in 9.1 m. Find the coefficient of kinetic friction between the runners of the sled and the snow.

Explain the activation energy of the oxidation reaction : Ammonia will react with oxygen in the presence of a copper catalyst to form nitrogen and water. From 164.5 C to 179C, the rate constant increases by a factor of 4.27. What is the activation energy of this oxidation reaction |

Characteristic path of projectile motion : The drawing shows a skateboarder moving at 7.87 m/s along a horizontal section of a track that is slanted upward by 49.2 ° above the horizontal at its end, which is 0.739 m above the ground. |

Explain what is the rate constant at 227 c : A rate constant obeys the Arrehnius equation, the factor A being 2.2 * 10^13 s-1 and the activation energy being 150 kj mol -1. What is the rate constant at 227 C, in s-1 |

Find what was the average angular speed of the ball : A soccer ball, which has a circumference of 70.0 , rolls 11.0 in 3.30. What was the average angular speed of the ball during this time |

Coefficient of kinetic friction between runners of sled-snow : A 20-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 35 N. Starting from rest, the sled attains a speed of 2.6 m/s in 9.1 m. Find the coefficient of kinetic friction between the runners of the sled and the sn.. |

Explain polymerization of methyl methacrylate : In addition polymerization of methyl methacrylate, the benzoyl peroxide is an initiator. Why is benzoyl peroxide called an initiator and not a catalyst |

Calculate by what factor was the nozzle diameter changed : A firefighter mounts the nozzle of his fire hose a distance 30.5 m away from the edge of a burning building so that it sprays from ground level at a 45° angle above the horizontal. By what factor was the nozzle diameter changed |

Case study - speedy tires : Using the random numbers which will be e-mailed to each group separately, manually simulate the depot operations with one bay and find the average waiting time of the 10 trucks? |

Explain the lewis dot structure be for 2cl molecule : What would the lewis dot structure be for 2Cl molecule + 2Iodied ion, and can you show me the polarity on both for reaction and after formation |

## Calculate at what speed are you drivingThe security alarm on a parked car goes off and produces a frequency of 960Hz. The speed of sound is 343m/s. At what speed are you driving |

## Compute the volume of the ballA small solid ball is released from rest while fully submerged in a liquid and then its kinetic energy is measured when it has moved 5 cm in the liquid. What is the volume of the ball |

## How far apart are the chargesif the magnitude of the force between two identical 100. microcoulomb negative charges is 9N. How far apart are the charges |

## Find the temperature at the surface of venusKnowing the temperature at the surface of the Earth to be 72 F, find the temperature at the surface of Venus. ( show your work step by step.) |

## What emf is induced in the smaller loopA small circular loop of area 2.00cm^2 is placed in the plane of, and concentric with, a large circular loop of radius 1.00m. What emf is induced in the smaller loop at t=0.500s |

## Determine the quantity of heat addedDetermine the quantity of heat added to 3.5 moles of the ideal gas argon if the temperature increases from 75 °C to 225 °C during an isobaric process. Note: The molar specific heats of argon are CV = 3.0 cal/K·mol and CP = 5.0 cal/K·mol. |

## What is the minimum output power rating in hp of motorYou are to determine the power rating of the motor in an elevator system. The elevator (with a full load) weights 2000 kg and is required to move upward 3 m/sec at constant speed. |

## How much farther would it travel on the moon than on earthOn the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The acceleration free-fall on the moon is 1/6 of its value on earth |

## Find how much time does this maneuver takeA gymnast is performing a floor routine. In a tumbling run she spins through the air, How much time does this maneuver take |

## Determine the magnetic flux that passes through the floorA house has a floor area of 120 m2 and an outside wall that has an area of 27 m2. determine the magnetic flux that passes through the floor |

## Q1 a sailboat is running along a straight course with theq1. a sailboat is running along a straight course with the wind providing a constant force of 55 lb. the only other |

## Determine the magnitude of the second displacementThe first has a magnitude of 128 cm and makes an angle of 113 degrees with the positive x axis. The resultant displacement has a magnitude of 180 cm and is directed at an angle of 39 degrees to the positive x axis. |

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