A charged line of linear charge density ? has been bent into a circular arc of radius r that makes an angle ? with its center. (A). Find the magnitude of the electric field at the center of this arc. (Does your result make sense, what should it be if the arc were increased to a full circle? How about if it were shrunk to an angle of 0?) (B). Where would a point charge of the same total charge as the arc need to be placed in order to make the electric field at the center of the arc equal to zero? (Hint: X and Y axes have not been chosen for you, you will have to choose your own. If you consider symmetry, you can choose them so that the electric field at the center only points in either the X or Y direction. Make sure to include a diagram showing your choice. More Hints: How does the magnitude of the electric field contributed by each little segment of arc compare to the contributions from the other segments? Do we just straight up add these magnitudes?)

Solve partial differential equation : Use the Crank-Nicolson procedure to solve the following partial differential equation |

At what distance from the axis will the electron strike : An electron with kinetic energy of 6.0 x 10-16 J is moving to the right along the axis of a cathode-ray tube. There is an electric field vector = (2.0 x 104 N/C) j in the region between the deflection plates. |

Explain analysis performed during project identification : he economic analysis performed during project identification and selection is rather superficial. Explain why is this? We could train "head person' in normal way, similar to what we are doing here. |

Calculate the standard score : Consider a normal population with µ = 25 and σ = 7.0. (A) Calculate the standard score for a value x of 23. |

Find the magnitude of the electric field at the center : A charged line of linear charge density ? has been bent into a circular arc of radius r that makes an angle ? with its center. (A). Find the magnitude of the electric field at the center of this arc. (Does your result make sense, what should it be.. |

Probability for the mean sat score : Assume that the mean SAT score in Mathematics for 11th graders across the nation is 500, and that the standard deviation is 100 points. Find the probability that the mean SAT score for a randomly selected group of 150 11th graders is between 475 a.. |

Determining poisson distribution and probability : The owner of a small computer store personally sells one computer per week on the average. Use the Poisson distribution to find the probability of randomly selecting a week in which she personally sold three computers. |

Binomial distribution-probability of observing event : Jared bets on the number 7 for each of 100 spins of a roulette wheel. Because P(7) = 1/38 he expects to win two or three times. What is the probability that Jared will actually win two or more times? |

What is the speed of water : A house sits in a valley and is 30 m lower than the water tower that serves it. What is the speed of water when it sprays out of a shower in the house? |

## What is the direction from the players original pointWhat is the direction from the players original point. he estimates that the car is about 400 m away. |

## Find speed at which the ball was launchedA ball has fallen to the street below, and a passerby returns it by launching it at an angle of 53.0° above the horizontal at a point 26.0 m from the base of the building wall. The ball takes 2.20 s to reach a point vertically above the wall. |

## What average force did the target exert on the arrowA young boy swings a yo-yo horizontally above his head at an angular acceleration of 0.32 rad/s^2. If the tangential acceleration of the yo-yo at the end of the string is 0.15 m/s^2, how long is string. |

## Suppose the fan coasts to a stop 30s after being turned offThe front 1.20 m of a 1600 kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision. |

## What is the new rotational energy of systemTwo astronauts, each having a mass M, are linked by a rope of length d having negligible mass. They are isolated in space, orbiting their center of mass at speeds v. |

## What is the y-component of forceObject A, which has been charged to + 29.2 nC, is at the origin. Object B, which has been charged to - 28.9 nC, is at ( x,y ) = ( 0.0;{rm cm},; 1.50 cm ).What is the y-component of force (vec{F}_{rm A ; on ; B})_{rm y} on B due to A. |

## What is grocery carts final speedWhy does the base of a shuttle cock always lead in motion when hit with a racket. what is grocery carts final speed. |

## How is this different in scienceA bug crawls outward from the center of a compact disc spinning at 160 revolutions per minute. The coefficient of static friction between bug's sticky feet and disc surface is 1.10.How far does the bug get from the center before slipping. |

## What is the weight of the stagingA 1300- {rm N} crate slides 15- {rm m} down a ramp that makes an angle of 35^circ with the horizontal. If the crate slides at the constant speed, how much thermal energy is created. |

## Find turntable angular speed while block reaches outer edgeA 210, 50-cm-diameter turntable rotates on frictionless bearings at 67. A 25 block sits at the center of the turntable. A compressed spring shoots the block thoroughly outward next to a frictionless groove in the surface of turntable. |

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