The sound level 23 m from a loudspeaker is 65 dB. What is the rate at which sound energy is produced by the loudspeaker, assuming it to be an isotropic source?

Explain how to estimate the amount of rainfall for gauge x : The rain¬fall amounts at three adjacent stations A, B, and C were 4.2, 3.7, and 4.9 in., respectively. The average annual precipitation amounts for the gauges are X = 36.5, A = 42.1, B = 37.1, and C = 39.8 inches. |

Is ethics a valid concern for a corporate president : Is "ethics" a valid concern for a corporate president, and if so, how might it be addressed in a broader sense corporation-wide? What ethical problems have companies gotten into in the past, and how could they have been prevented? |

Evaluate the integral correct to five decimal places : Use your calculator to evaluate the integral correct to five decimal places. |

What is interaction force in ferris wheel framework and seat : The pivot of each 120 kg seat on a Ferris wheel travels in a circle with a 10 m radius, and the Ferris wheelrotates witha rotational speed of 0.1 rad/sec. What is the interaction force between the ferris wheel framework and the seat H when angle Q.. |

What is the rate at which sound energy is produced : The sound level 23 m from a loudspeaker is 65 dB. What is the rate at which sound energy is produced by the loudspeaker |

Current or future life circumstances : Discuss how each of these principles can help you in your current or future life circumstances. |

How to calculate the increase in weight of the tank : water flows into a weigh tank for 30 minutes. Calculate the increase in weight of the tank, if the discharge is 1.5 ft^3/s. The temperature is 50 F. |

What is the range of the polarizing angle : some types of glass have a range of indices of refraction of about 1.4 to 1.7. What is the range of the polarizing angle |

What is the required return for jjm : Jersey Jewel Mining has a beta coefficient of 1.2. Currently the risk-free rate is 5 percent and the anticipated return on the market is 11 percent. JJM pays a $4.50 dividend that is growing at 6 percent annually. |

## Work done by the force of friction on the flight bagA flight attendant pulls hero 70 N flight bag a distance of 253 m along a level airport floor at a constant velocity. The force she exerts is 40N at an angle of 52.0 degrees above the horizontal. |

## Find the work he did in pushing forward on his wheelsHow many J of energy must be removed when 156 g of steam, at a temperature of 175.0 °C, is cooled and frozen into 156 g of ice at 0 °C. |

## Find the work done by the normal force on the objectJamie pulls a box of 1.0 kg mass up an inclined plane by a constant force of 10 N that causes a displacement of 0.50 m. find the work done by the normal force on the object |

## Determine the percentage lost by the windowA wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.13 m2, what is the percentage lost by the window |

## How long does the journey take according to the cosmic rayA cosmic ray travels 60 km through the earth's atmosphere in 380?s, How long does the journey take according to the cosmic ray |

## At what angle is such a hill inclined above the horizontalA hill that has a 25.7% grade is one that rises 25.7 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal? |

## Determine the leghth of wireA tungsten wire has a radius of 0.070 mm and is heated from 20.0 to 1416 oC. The temperature coefficient of resistivity is ? = 4.5 x 10-3 (Co)-1, How long is the wire |

## What is the turntables rotation angular velocityA 220, 45.0-cm-diameter turntable rotates on frictionless bearings at 55. A 21.0 block sits at the center of the turntable. A compressed spring shoots block radically outward along a frictionless groove in the surface of the turntable. |

## What is this maximum massA spherical shell has an outside radius of 2.6cm and an inside radius of a. The shell wall has uniform thickness and is made of a material with density 4.70g/ cm3. The space inside the shell is filled with a liquid having a density of 1.23g/cm3. |

## Find the mean and maximum velocities for a liquidCompute the mean and maximum velocities for a liquid with a flow rate of 20 L/min in a 1.5-in nominal diameter sanitary pipeline |

## Calculate the amount of that work converted to heatA satellite in a circular orbit around the earth with a radius 1.011 times the mean radius of the earth is hit by an incoming meteorite. Calculate the amount of that work converted to heat |

## What forces act on the hoopConsider a hoop of mass 2.1 kg and radius 0.57 m that rolls without slipping down an incline. What forces act on the hoop |

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