Q1. A 3.60-{rm m}-long, 430 {rm kg} steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66.0 {rm kg} construction worker stands at the far end of the beam. What is the magnitude of the torque about the point where the beam is bolted into place?

Q2. A 164 kg water skier floating in a lake is pulled from rest to a speed of 13 m/s in a distance of 26 m. What is the net force exerted on the skier, assume the acceleration is constant?

Find out the energy level and wave functions of the ground : A spring stiffness 900 N/m and relaxed length 1m stands vertically on a table. You hold a block of mass 1 kg barely touching the top of the spring. Assume you let the mass down onto the spring certain distance very slowly and view the mass is not mov.. |

What is the maximum potential difference : A wheel 45.0 cm in diameter accelerates uniformly from 206rpm to 340 rpm in 7.0 s. How far will a point on edge of the wheel have travelled in this time. |

What is the gravitational attractive force : A screen is placed 1.30 {rm m} behind a single slit. The central maximum in the resulting diffraction pattern on the screen is 1.70 {rm cm} wide-that is, two first-order diffraction minima are separated by 1.70 {rm cm}. |

Determine the maximum current a 1.53-mm-diameter niobium : A typical Major League fastball is thrown at about 99 mph and with a spin rate of 103 rpm. If the distance between the pitcher's point of release and the catcher's glove is exactly 65.5 ft, how many full turns does the ball make between release and c.. |

What is the net force exerted on the skier : A 3.60-{rm m}-long, 430 {rm kg} steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66.0 {rm kg} construction worker stands at the far end of the beam. What is the magnitude.. |

Estimate the temperature of a 150 w light bulb : The temperature of the glass surface of a 30 W light bulb is 75°C when the room temperature is 10°C. Estimate the temperature of a 150 W light bulb with a glass bulb the same size. Consider only radiation, and assume that 90% of energy is emitted as .. |

What is the direction of velocity : On a very muddy football field, a 100 linebacker tackles a 75 halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.9 north's and the halfback is sliding with a velocity of 7.9 east's. |

In the two-way anova the dfm : The variable recorded for each subject was the number of additional yards (possibly negative) that the subject could drive the ball by the end of the season. In the two-way ANOVA the DFM |

What is the maximum compression of the spring : Dan is gliding on his skateboard at 2.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit the ground? Dan's mass is 60 kg and the skateboard's mass is 5.0 kg. |

## What impulse does an engine impart to the rocketDetermine the greatest vertical displacement of the pendulum (height). The mass lost by the rocket during these 30.0 is negligible. What impulse does an engine impart to the rocket? |

## What is the force exerted by the waterThe parallel metal plate of a capacitor is seperated by a distance of 0.5cm and is connected to a 90v battery. Find an electric field between them and the surface charge density. |

## Determine the simple harmonic motion of the springDetermine the simple harmonic motion of the spring what ac velocity is ball moving |

## Molecules angular speed about the center of massThe molecule has a rotational kinetic energy that is of the translational kinetic energy of its center of mass. What then is molecule's angular speed about the center of mass. |

## Find out an effective coefficient of kinetic frictionFind out an effective coefficient of kinetic friction |

## What is the magnification of imageA 180g block hangs from a spring with spring constant 6.0 N/m. At the block is 31cm below the equilibrium point and moving upward with a speed of 98.0cm/s. What is the block's position at t = 9s. |

## How various beats per second are heardWhen two tuning forks of 128 Hz and 149 Hz, respectively, are sounded simultaneously, how various beats per second are heard. |

## Compute the force exerted by the seatA pilot flies an airplane at a constant speed of 520 km/hr in the vertical circle of radius 1400 m. compute the force exerted by the seat on the 105-kg pilot at point A and at point B. |

## Find the magnitude of the horizontal component of the planeA jetliner is moving at a speed of 187 m/s. The vertical component of the plane's velocity is 44.5 m/s. find out the magnitude of the horizontal component of the plane's velocity. |

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