A 25 gram ball is released from rest 80 meter above the surface of the Earth. During the fall the total thermal energy of the ball and air increases by 15 Joule. Determine its speed just before it hits the surface?

Explain the significance of the nernst equation : Explain the significance of the Nernst equation. What does it imply when we say that "an ion satisfies the Nernst equation"? |

Determine the index of refraction of this substance : Light travels a distance of 1.060 meter in 4.20 nanoseconds in a given substance. Find the index of refraction of this substance |

Evaluate the magnitude of that push : A sphere of mass 2.5 x 10-4 kilogram is suspended from a cord. A steady horizontal breeze pushes the sphere therefore that the cord makes a constant angle of 33 degree with the vertical. Evaluate the magnitude of that push |

Compute what is the canoe mass : A 64.5 kilogram canoeist stands in the middle of her canoe. The canoe is 3.5 meter long, and the end that is closest to land is 2.5 meter from the shore. Determine what is the canoe mass |

Determine its speed just before it hits the surface : A 25 gram ball is released from rest 80 meter above the surface of the Earth. Determine its speed just before it hits the surface |

What is a mechanism of abnormal muscle function : Compare mystenia gravis as neuromuscular disorder to Duchenne muscular dystrophy. What is a mechanism of abnormal muscle function in children suffering from Duchenne muscular dystrophy? |

Find the work done by the external force : A 0.50 kilogram object moves in a horizontal circular track with a radius of 2.5 meter. Find the work done by the external force as the mass makes one revolution |

Determine what is the tangential speed of the ball : An athlete swings a 3.60 kilogram ball horizontally on the end of a rope. Determine what is the tangential speed of the ball |

Evaluate the potential energy associated with the satellite : A satellite has a mass of 106 kilogram and is placed at 2.0 x 106 meter above the surface of Earth. Find the potential energy associated with the satellite at this location |

## What is the total momentum of system before the collisionA 1800 kg car traveling north (+) at 70 km/h collides at an intersection with a 2000 kg car traveling west (-) at 57 km/h. The two cars stick together. What is the total momentum of the system before the collision? |

## What is the radius of the first diffraction minimumA solar eclipse is projected through a pin- hole of diameter 0.247mmand strikes a screen 3.12 m away. What is the radius of the first diffraction minimum |

## How long after starting is the magnitude of its centripetalA turntable that spins at a constant 73.0 {rm rpm} takes 3.60 {rm s} to reach this angular speed after it is turned on. Find its angular acceleration (in {rm rad/s^{2}}), suppose it to be constant, and the number of degrees it turns through while .. |

## A candle 880 cm high is placed in front of a thina candle 8.80 cm high is placed in front of a thin converging lens of focal length 40.0 cm. what is the image distance |

## Find out the average net force exerted on the performerA chair of weight 130 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 45.0 fixed at an angle of 39.0below the horizontal and the chair slides along the floor. |

## What speed must neutrons haveElectrons with a speed of 1.6×10^6m/s pass through a double-slit apparatus. What speed must neutrons have to produce interference fringes with a fringe spacing of 1.6mm |

## Determine the density of the glycerinA plastic sphere floats in water with 65.0% of its volume submerged. This same sphere floats in glycerin with 51.6% of its volume submerged. Determine the density of the glycerin |

## Determine the average mechanical powerA motorist driving a 1200-kg car on level ground accelerates from 20.0 m/s to 30.0 m/s in a time of 5.7 s. determine the average mechanical power in watts the engine must supply during this time interval |

## What is the required value of the constant inductanceAn amateur radio operator wishes to build a receiver that can tune a range from 13.8 MHz to 15.1MHz, What is the required value of the constant inductance |

## A block of unknown mass is attached to a spring with aa block of unknown mass is attached to a spring with a spring constant of 7.50 nm and undergoes simple harmonic motion |

## Obtain how many miles could the car go with that energySuppose one gallon of gasoline produces 1.1 x 108 J of energy, and this energy is sufficient to operate a car for twenty miles. how many miles could the car go with that energy |

## Edge of the top of the building with an initial velocityA rock is projected from the edge of the top of the building with an initial velocity of 12.2 m/s at an angle of 53 degrees above the horizontal. The rock strikes the ground a horizontal distance of 25m from the base of the building. Assume that t.. |

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