a solid wood door 90 cm wide by 2.00 m tall has a mass of 35.0 kg. it is ajar and at rest. a ball with a mass of 500 g is thrown perpendicular to the door with a speed of 20.0 m/s and hits the door 60.0 cm from the hinged side. the ball rebounds with a speed of 16.0 m/s along the same line. how much energy is lost in the process?

How to calculate the wavelength of the photon emitted : Calculate the wavelength of the photon emitted when the hydrogen atom undergoes a transition from n = 5 to n = 3. (R = 2.179 x 10-18 J R = 1.096776 x 10^7 m-1) |

Compute q when 28.6 g of water is heated : Calculate q when 28.6 g of water is heated from 22.0?C to 78.3?C. (the specific heat capacity for water = 4.184 J/(g•oC). |

Calculate the linear acceleration of the bicycle : A bicycle has wheels with a diameter (DIAMETER, not radius) of 0.580 m. Find the linear acceleration of the bicycle |

Compute how far will it go : A car is traveling at 50 miles per hours. The driver sees a deer and hits the brakes. How far will it go |

Determine how much energy is lost in the process : a solid wood door 90 cm wide by 2.00 m tall has a mass of 35.0 kg. it is ajar and at rest. a ball with a mass of 500 g is thrown perpendicular to the door with a speed of 20.0 m/s, how much energy is lost in the process |

Explain the half-life of 44ti : What is the half-life (in years) of 44Ti if a 1.0 ng sample decays initially at a rate of 4.8*10^3 disintegration s/s |

Determine the galaxys speed relative to the earth : When viewed by an observer on the Earth, light from a distant galaxy is Doppler shifted to the red such that the ratio of the unshifted frequency to the observed frequency is 2.1 |

Demand for automobiles - foreign vs domestic : Provide statistical results by using STATA and interpretations - Topic is Demand for Automobiles: Foreign vs Domestic. |

Explain a solution of potassium permaganate is standardized : A solution of potassium permaganate is standardized with iron metal, a primary standard. The iron is dissolved in acid, reduced to Fe(II), and titrated with permanganate. |

## What is the magnitude of frictional force acting on thecrateA rope exerts a constant horizontal force of 250N to pull a 60 Kg crate across the floor. |

## Determine the minimum uncertainty in positionWhat is the minimum uncertainty in position, in nm, of an electron whose velocity is known to be between 2.30×105m/s |

## Determine the momentum of the electronA 0.658-nm photon collides with a stationary electron. After the collision, Find the momentum of the electron |

## During heavy rain a section of a mountainside measuring 38during heavy rain a section of a mountainside measuring 3.8 km horizontally perpendicular to the slope 0.44 km up along |

## Determine the resulting angular speed of the studentA student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 4.0 kg m2. What is the resulting angular speed of the student and the stool |

## What was the bullets flight timeA classroom slide projector projects an enlarged (50 times taller) image of a 24mm high photographic film onto a screen located 10 meters from the projector. What focal length lens (cm) does the slide projector require to produce a sharply focus i.. |

## Estimate the specific heat of the materialA 50.0-g sample of a material at 80.0 degree C is dropped into a calorimeter containing 100.0g of water at 20.0 degree C. What is the specific heat of the material |

## Calculate the average power dissipated by the loopA current with sinusoidal time-dependence, whose peak value is 6.55 A and frequency is 879 cycles per second, Calculate the average power dissipated by the loop |

## What is the magnitude of the trains accelerationA toy train is pushed forward and released at x0=2.0 m with a speed of 2.0 m/s. What is the magnitude of the train's acceleration after its wheel begins to stick |

## An amusement park roller coaster starts out on a level trackAn amusement park roller coaster starts out on a level track 50.0 m long and then goes down a 50.0-meter incline at an angle of 30° to the vertical. It then goes up a 20.0-meter ramp with an incline of 20° to the horizontal. |

## What is the moment of inertia of the sphereA solid sphere with a radius of 9.3 cm an mass of 373 g is allowed to roll 4.30 m without slipping down a 13.2 degree incline. What is the moment of inertia of the sphere |

## How far over does it land on the groundA soccer ball lying on the ground is kicked with an initial velocity of 10.0 m/s at an angle of 37 degrees above the horizontal. How far over does it land on the ground? |

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