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. When she leaves the track, she follows the characteristic path of projectile motion. Ignoring friction and air resistance, find the maximum height H to which she rises above the end of the track.

Find the angle between the inclined plane and the horizontal : A hollow, thin-walled cylinder and a solid sphere start from rest and roll without slipping down an inclined plane of length 3.0 m. find the angle between the inclined plane and the horizontal |

Child climbs a normal staircase to the second floor : When an 78.3-kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2.08 x 103 J. By how much does the potential energy of a 19.5-kg child increase when the child climbs a normal st.. |

Compute average time a customer waits for service : Case Study - Local Bank - Average time a customer waits for service, average time a customer is in the system and percentage of time the server busy with customers (utilization factor) |

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 |

## What is the wavelength in vacuum of these x-raysIn a dentist's office, an X-ray of a tooth is taken using X-rays that have a frequency of 8.07 multiply.gif 1018 Hz |

## Find the average angular velocity of his arms and legsBiomedical measurements show that the arms and hands together typically make up 13.0 of a person's mass, while the legs and feet together account for 37.0. find the average angular velocity of his arms and legs |

## Calculate how wide is the slitWhen illuminated with light of 600nm (6*10^-7 m), the first dark fringe produced by a single slit lies a distance of 1.4 cm from the center of the screen placed 3.0 m from the slit |

## Determine how far east did she walkIn reaching her destination, a backpacker walks with an average velocity of 1.37 m/s, due west. This average velocity results because she hikes for 6.44 km with an average velocity of 2.54 m/s, due west, turns around, how far east did she walk |

## Find which car is ahead just after they leave starting pointTwo cars, A and B, travel in a straight line. The distance of A from the starting point is given as a function of time by XA (t)=at+Bt^2, Which car is ahead just after they leave the starting point |

## Find the magnitude of the impulse applied to it by the batForce of a Baseball Swing. A baseball has mass 0.145 kg. Find the magnitude of the impulse applied to it by the bat |

## Find the pitch of the helixA proton is passing through a uniform, 0.500-T magnetic field and is directed along the x axis. find the pitch of the helix |

## What average force must act on the carin order to stop a 1500kg car that is originally moving at 25m/s, and if the car stops over a distance of 50m, what average force must act on the car |

## Using the liquid drop model-tabulate nuclear binding energyUsing the liquid drop model, tabulate the nuclear binding energy and the various contributions to the binding energy for the nuclei 40Ca and 208Pb. |

## How many moles of water molecules are contained in the glassA cylindrical glass of water (H2O) has a radius of 4.38 cm and a height of 12.3 cm. The density of water is 1.00 g/cm3. How many moles of water molecules are contained in the glass |

## Find out the speed of the bullet/block combinationstrikes the wooden block of a ballistic pendulum, as shown. The block has a mass of 270 g. Find out the speed of the bullet/block combination immediately after the collision. |

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