A skydiver opens the parachute at the moment when he is 540 meters above the ground and his speed (right before opening the parachute) is 97m/s. What should be the magnitude of the air resistance force for the skydiver to come to a stop exactly at the ground? The mass of the diver including the parachute is 82kg. Assume g=9.8m/s^2

Concept of environmental sustainability : Discuss the concept of environmental sustainability. Discuss the challenges to sustainability faced by developed, emerging, and survival economies. Do you think the “green” movement is a fad, or is it here to stay? 200 Word Maximum |

Effects on american society : Define industrialization and describe its effects on American society from 1865-1917 |

Estimate the vertical hydraulic conductivity using the heads : Write Darcy's equation in 2-D. There are three piezometers in an unconfined sand aquifer as shown below. The head measurements at A = 104.56 ft, B = 104.53 ft, C = 103.42 ft. The rate of recharge here is estimated to be 1.25 ft/yr. |

Determine direction and magnitude of hydraulic gradient : Piezometer A is located 3000 feet due south of piezometer B. Piezometer C is located 2000 feet due west of piezometer B. The surface elevations of A, B and C are 480, 610 and 545 feet respectively. The depth to water in A is 40 feet, in B is 140 f.. |

What should be the magnitude of the air resistance force : A skydiver opens the parachute at the moment when he is 540 meters above the ground and his speed (right before opening the parachute) is 97m/s. What should be the magnitude of the air resistance force |

Persuasive techniques used in consumer advertising : Consider the key persuasive techniques used in consumer advertising - Critical issues that could arise from the areas - children and Advertising |

How many acres should the detention pond be to store : a rainstrom lasts for 90 min at a constant intensity of 3.2 in/hr over a five acre parking lot. a detention pond is used to store all of the runoff from the parking lot and cannot be deeper than 2 ft. |

To what height does the package of mass rebound : What is the maximum speed of a 2.20g particle that oscillates between x =2.0mm and x =8.0mm, Suppose the collision between the packages is perfectly elastic. To what height does the package of mass m rebound |

What is the ideal speed for a motorist to take the curve : A curve is banked at an angle of 30 degrees with respect to the horizontal. what is the ideal speed for a motorist to take the curve when it is covered by glare ice |

## What is the safest speed to go around the curveWhat is the terminal speed for an 79 skier going down a 36 snow-covered slope on wooden skis = 0.060? Assume that the skier is 1.8 m tall and 0.50 m wide. |

## Determine the angular size of the imageThe near point of a naked eye is 32 cm. When an object is placed at the near point and viewed by the naked eye, Determine the angular size of the image |

## What is the maximum current in the wireTwo 9.0 cm--diameter metal plates are 1.2 cm apart are charged to 12.5 nC . They are suddenly connected together by a 0.218mm, What is the maximum current in the wire |

## What is the range of aperture diameters for the cameraA certain camera has f-numbers that range from 1.1 to 28. If the focal length of the lens is 40 mm, what is the range of aperture diameters for the camera |

## Find the magnitude of the charge density on the platesTwo large parallel plates are separated by 0.90cmand carry uniform charge densities equal in magnitude and opposite in sign, Find the magnitude of the charge density on the plates |

## Calculate the radius of the path inside the magnetic fieldA particle with a mass of 6.64*10^-27kg and a charge of 3.20*10^-19Cis accelerated from rest through a potential difference of 2.45*10^6V. calculate the radius of the path inside the magnetic field |

## Find the value of the constant aConsider a disk of radius R = 41.0 cm and thickness t = 1.1 cm, with a nonuniform volume charge density given by ? = A, If A = 510 ?C/m4, what is the total charge of this disk |

## What is the magnitude of its velocity after the collisionwhat is the magnitude of its velocity after the collision. A soccer player applies a force of 60.5 N to a soccer ball while kicking it. If the ball has a mass of 0.42kg, what is the acceleration of the soccer ball. |

## How soon does the wrench hit the groundA helicopter rises vertically with a constant upward acceleration of 0.38 m/s^2. How soon does the wrench hit the ground |

## What is the maximum length of the antennaThe antenna on a cordless phone radiates microwaves at a frequency of 2.0 GHz. What is the maximum length of the antenna |

## What about while the person is standing on both feetAn airplane travelling 1001 m above the ocean at 125km/hr is to drop a box of supplies to shipwrecked victims below. How various seconds (t) before being dropped directly overhead should the box be dropped. |

## Illustrate energy bar graphs to solve the problemIllustrate energy bar graphs to solve the problem . What is amplitude of the oscillations. |

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