Three equal point charges, each with charge 2.00, are placed at the vertices of an equilateral triangle whose sides are of length 0.650 . What is the electric potential energy of the system?

Explain how will the acceleration due to gravity : Explain how will the acceleration due to gravity at the surface of planet X compare to the acceleration due to gravity at the surface of earth? |

Evaluate effect of treatment using hypothesis test : A researcher administers a treatment to a sample of n = 25 participants and uses a hypothesis test to evaluate the effect of the treatment. |

What is propability that mary and dick child have freckles : Mary has freckles,but her husband Dick does not.Mary's father has freckles but her mother does not.what is the propability that Mary and Dick's child will have freckles? |

Thoughts regarding corporate compensation : What are your thoughts regarding corporate compensation and the potential need for new regulations given the current state of the economy, corporate bankruptcies and bailout of institutions? |

Illustrate what is the electric potential energy of system : Three equal point charges, each with charge 2.00, are placed at the vertices of an equilateral triangle whose sides are of length 0.650. Illustrate what is the electric potential energy of the system? |

Which drug is more effective at improving exam scores : Two new chemicals have just been made by one of our colleagues in the medicinal chemistry area. The discoverer thinks that these chemicals will improve memory, so we test these drugs called A and B. |

Calculate the solubility of mx in strong acid : For the compound MX, Ksp is 2.00 × 10-11. The anion X- forms the weak acid HX (Ka = 1.8 × 10-5). Calculate the solubility of MX in 10.00 M strong acid. |

How to use margin of error in estimating the percentage : How would you use the "margin of error" in estimating the percentage of all adults who think that Venetian blinds are the hardest to clean? |

Calculate the theoretical yield and percent yield of baso4 : Barium sulfate, BaSO4, is made by the following reaction: Ba(NO3)2(aq) + Na2SO4(aq) à BaSO4(s) + 2NaNO3(aq). |

## What is the shortest length of highwayA highway is to be built between two towns, one of which lies 36.0 km south and 88.0 km west of the other. What is the shortest length of highway that can be built between the two towns, and at what angle would this highway be directed? length km.. |

## Determine the frequency of the second overtoneSuppose you have a tube 1.20 m long, open on both ends. Determine the frequency of the 2nd overtone, assuming the speed of sound to be 343 m/s. Repeat for the same length tube but with a closed end. |

## Find out the effective spring constant of the systemA 0.95 kg air-track glider is attached to each end of the track by two coil springs. It takes a horizontal force of 0.500 N to displace the glider to a new equilibrium position, x= 0.130 m. |

## Find a maximum value of the accelerationDan is gliding on his skateboard at 4 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 6 m/s (as measured by an observer on the ground). Dan's mass is 50 kg and the skateboard's mass is 7 kg. How fast is Dan going.. |

## Determine the altitude as she crosses the barA uniform plank of length 5 m and weight 231 N rests horizontally on two supports, with d = 1.43 m of the plank hanging over the right support. To what distance, x, can a person who weighs 446 N walk on the overhanging part of the plank before it .. |

## What was the tension in the stringA tobagan with a mass of 15kg is being pulled with an applied force of 45N at an angle of 40 degrees to the horizontal. What is the acceleration if the force of friction opposing the motion is 28N. |

## What is strength of the magnetic fieldThe path of an electron, travelling at 3.7 × 104 meters/second, is making the right angle to a magnetic field. A single electron experiences a force of 2.2 × 10-15 Newton's while in the field. What is strength of the magnetic field . |

## Calculate the magnitude of this decrease using an emfAttaching this non-ideal voltmeter decreases the voltage across R2. Calculate the magnitude of this decrease using an emf of 14 V and R1 = R2 = 350 k? |

## Find the change in the internal energyA 600 turn solenoid, 25 cm long, has a diameter of 2.8 cm. A 10 turn coil is wound tightly around the center of the solenoid. If the current in the solenoid increases uniformly from 0 to 5.0 A in 0.48 s, what would be the induced emf magnitude in the.. |

## What force would be required to pull the same woodenA piston, A, as shown below, has a diameter of 0.61 cm. A second piston, B has a diameter of 3.7 cm. Determine the force, F, necessary to support 500.0 N weight in the absence of friction. |

## What is the distance between the object and the imageTwo carts with masses of 12.5 kg and 4.5 kg, respectively, move in opposite directions on the frictionless horizontal track with speeds of 8 m/s and 5 m/s, respectively. The carts stick together after colliding head-on. Find the final speed of the.. |

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