Please answer both parts A and B.

A) The decibel level of the noise from a jet aircraft is 130 dB when measured 16.8 m from the aircraft. How much sound power does the jet aircraft emit? Answer in units of W.

B) How much sound power would strike the eardrum of an airport worker 16.8 m from the aircraft? Assume the diameter of the worker’s eardrum is 1.7 × 10?2 m. Answer in units of W.

Silver is the best heat conductor of all metals : A pipe 0.026 m in diameter and 0.22 m long can transfer 3476 J of heat per second with a temperature difference across the ends of 7?C. Compare this performance with the heat transfer of a solid silver bar of the same di- mensions by finding the rati.. |

Find the student''s final angular velocity : A student sits on a swivel seat. Initially the student is at rest, holding a spinning bicycle wheel that has an angular velocity of 10.2 rad/s (see figure below). The student turns the spinning wheel upside down, reversing the direction of its angula.. |

How much heat is lost through the window : A Thermopane window of area 6.8 m2 is constructed of two layers of glass, each 5.4mm thick and separated by an air space of 2 mm. If the inside is at 12?C and the outside is at ?36?C, how much heat is lost through the window? The thermal conductivity.. |

Sound emerging from door spreads uniformly in all directions : A rock group is playing in a bar. Sound emerging from the door spreads uniformly in all directions. The intensity level of the music is 37 dB at a distance of 5.99 m from the door. At what distance is the music just barely audible to a person with a .. |

How much sound power does the jet aircraft emit : The decibel level of the noise from a jet aircraft is 130 dB when measured 16.8 m from the aircraft. How much sound power does the jet aircraft emit? How much sound power would strike the eardrum of an airport worker 16.8 m from the aircraft? Assu.. |

Produce sound intensity equal to that of normal conversation : A typical decibel level for a buzzing mosquito is 40 dB and normal conversation is approximately 50 dB. How many buzzing mosquitoes will produce a sound intensity equal to that of normal conversation? |

Planets have so far been detected beyond our solar system : Over 500 planets have so far been detected beyond our solar system. This is accomplished by looking for the effect the planet has on the star. The star is not truly stationary; instead, it and its planets orbit around the center of mass of the sys.. |

A baseball coach shouts loudly at an umpire standing : A baseball coach shouts loudly at an umpire standing 3.8 meters away. If the sound power produced by the coach is 2.2 × 10?3 W, what is the intensity of the sound when it reaches the umpire? Answer in units of W/m2. |

Force is the frictional force between the tires and the road : A 1000kg car moving 40m/s skids to a stop. During the skid, the only force is the frictional force between the tires and the road, which is 6000N. Use work and energy to find the distance the car moves before coming to a stop. |

## Find expressions for the magnitude and directionThe electric potential in a region is V=-Vo(r/R), Find expressions for the magnitude and direction of the electric field in this region |

## What is the stopping distance in metersA car is traveling at 67.53 mph. The driver applies the brakes and the car decelerates at 5.68 m/s2. What is the stopping distance in meters |

## What angle does this vector make with the positive axisThe x and y components of a displacement vector are -3.00 m and +4.00 m, respectively. What angle does this vector make with the positive x axis |

## What horizontal forces act on the trainA locomotive pulls a train along a straight, horizontal track at constant velocity. What horizontal forces act on the train and the locomotive |

## What is the highest height reached by the rocketWhat is the highest height reached by the rocket. what is its initial speed as it leaves the ground. |

## What is the cannonball impact speed when it landsA cannonball is catapulted toward a castle. The cannonball velocity when it leaves the catapult is 40 m/s at an angle of 37%uF0B0, What is the cannonball%u2019s impact speed when it lands |

## What is the velocity of the first car after the collisionA 435 kg car moving at 20.0 m/s hits from behind another car moving at 9.0 m/s in the same direction. what is the velocity of the first car after the collision |

## Determine the largest number of bulbsSome light bulbs are connected in parallel to a 120 V source, Determine the largest number of bulbs, which can be used in this circuit without burning out the fuse |

## Find the positions of the two massesFind the positions of the two masses at any subsequent time t (before either mass returns to the table) and describe the motion. |

## Value of dielectric constant for material between the platesA parallel-plate capacitor has a surface charge density = 8.0 10-5 C/m2 and an electric field E = 2.7 106 V/m in the material between the plates. |

## What is the net force acting on the carOn vacation, your 1100 kg car pulls a 540 kg trailer away from a stop light with an acceleration of 2.10 m/s2. What is the net force acting on the car |

## What will the traveler weigh on another planetA space traveler weighs 580 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth? |

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd