Q. A uniform plank of length 6-m and mass 30.0 kg rests horizontally across two horizontal bars of a scaffold. The bars are 4.50 m apart, and 1.50 m of the plank hangs over one side of the scaffold. Sketch a free-body diagram of the plank. How far can a painter of mass 70.0 kg walk on the overhanging part of the plank before it tips?

Forecasting and quality control : A company is producing cylindrical blocks for a children's toy. The average diameter of a block is 3.5 inches. Sixteen blocks are inspected and the diameters are measured. |

Explain the mode of inheritance controlling coat color : In cattle, coat color may be white, black, or black and white spotted. When true breeding white cattle are crossed with true-breeding black stock, the F1 is all solid white. |

Determine the kinetic energy of the disk : A horizontal 797N merry-go-round is a solid disk of radius 1.53 m, started from rest by a steady horizontal force of 50.4 N applied tangentially to the edge of disk. Determine the kinetic energy of the disk after 3.06 s. |

Monthly budget-supporting schedules : The controller of Dash Shoes Inc. instructs you to prepare a monthly cash budget for the next three months. You are presented with the following budget information: |

Sketch a free-body diagram of the plank : Sketch a free-body diagram of the plank. How far can a painter of mass 70.0 kg walk on the overhanging part of the plank before it tips. |

Estimate the diameter of the field : If you analyze the diameter of the field of view for the 4X objective lens of a compound microscope with 10X oculars as 4.5 mm, what is the diameter of the field of view for the 100X objective lens? |

Determine average net force exerted in the barrel of cannon : determine average net force exerted in the barrel of cannon. |

Expected value of guessing : In multi-choice test, each question has four options. Students wil get 10 points for each correct answer; lose four points for each incorrect answer; and receive no points for unanswered questions. |

National average for a new car loan : The national average for a new car loan is 8.28%. If the rates are normally distributed with a standard deviation of 3.5%, find the probability one can receive a rate less than 9% |

## What was the final temperature of coinsIn a physics lab experiment, a student immersed 201 one cent coins (each having a mass of 3.00) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.240 of water at 20 in an insulated contai.. |

## Calculate the magnitude of the magnetic force exerted on itcompute the magnitude of the magnetic force exerted on it. |

## Show the altitude of the planeif the airplane somehow continues to fly as if nothing happend, where is the engine relative to airplane at the moment the engine hits the ground. |

## Calculate the kinetic energy that the rock gainsA barbell consists of two small balls, each with mass 600 grams (0.6 kg), at the ends of a very low mass rod of length d = 20 cm (0.2 m). The center of the barbell is mounted on the end of a low mass rigid rod of length b = 0.3 m, and this rod rot.. |

## What is the tension of each of these wiresAn airplane has a mass of 1.8×10^6 kg , and the air flows past the lower surface of the wings at 94 m/s .f the wings have a surface area of 1300 m^2, how fast should the air flow over the upper surface of the wing if the plane is to stay in the ai.. |

## What is the frequency of fundamental oscillationA cord of length 1.0m is fixed at both ends. Its mass per unit length is 1.2g/m and the tension is 11N. What is the frequency of fundamental oscillation |

## What was the roadrunners launch speedAn ocean liner leaves New York City and travels 37.0° north of east for 171 km. How far east and how far north has it disappeared? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions. |

## Construct a graph of the felines velocity as a functionHow far below the release point is the center of mass of two stones at t = 550 ms? (Neither stone has yet reached the ground.) |

## What is the magnitude of the total momentum of the systemAt a certain location, the horizontal component of the earth's magnetic field is 4.90 10-5 T, due north. A proton moves eastward with just the right speed, so magnetic force on it balances its weight. Find the speed of the proton. |

## How many rebounds will the ball makeThe emissivity of her skin is 0.750 and its surface area is 1.30 m2. How much time would it take for her to emit a net radiant energy from her body that is equal to energy contained in this dessert. |

## Estimate the gauge pressure at a second point in the lineLight is emitted by a sodium sample that is moving toward Earth with speed v. The wavelength of the light is 589 nm in the rest frame of sample. The wavelength measured in the frame of Earth is 537 nm. Find v. |

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