A circular loop of radius 50 mm in the plane of the paper carries a counterclockwise current of 15 A. It is submerged in a medium that has a relative permeability of 3.0 Calculate the magnitude and direction of the magnetic induction at the center of the loop.

Determine what is the maximum speed of the mass : A 0.35 mass is attached to a spring with a force constant of 26 and released from rest a distance of 3.9 from the equilibrium position of the spring. What is the maximum speed of the mass |

Calculate how far is the lens from the slide : A transparent photographic slide is placed in front of a converging lens with a focal length of 2.33 cm. An image of the slide is formed 11.4 cm from the slide. How far is the lens from the slide if the image is real |

What is the focal length of the rearview mirror : The right-side rearview mirror of Mike's car says that objects in the mirror are closer than they appear. Mike decides to do an experiment to determine the focal length of this mirror. He holds a plane mirror next to the rearview mirror and views .. |

Explain density of an aqueous solution of potassium nitrate : What is the density of an aqueous solution of potassium nitrate, that has a normal boiling point of 103.0 degrees Celsius, and an osmotic pressure of 122 at 25 degrees Celsius |

Direction of the magnetic induction at the center of loop : A circular loop of radius 50 mm in the plane of the paper carries a counterclockwise current of 15 A. It is submerged in a medium that has a relative permeability of 3.0 Calculate the magnitude and direction of the magnetic induction at the center of.. |

What is the new rotational energy of the system : Two astronauts, each having a mass M, are connected 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 new rotational energy of the system |

What are the magnitude and sign of the unknown charge : A 20-mC charge is 4 cm above an unknown charge q. The electric intensity at a point 1 cm above the 20-mC charge is 2.20x109 N/C and is directed upward. What are the magnitude and sign of the unknown charge? |

Explain the equilibrium concentration of the red iron : If the reaction between iron (III) ion and thiocyanate ion yielded an equilibrium concentration of .15 M for each of these ions, what is the equilibrium concentration of the red iron (III)-thiocyanate complex |

Evaluate by how much is the column compressed : A 3.4-m-tall, 90-cm-diameter concrete column supports a 4.0×10^5kg load. By how much is the column compressed |

## How much work is done by nonconservative forcesA 2000 kg elevator initially is moving with speed 2 m/s as it passes the 5th °oor. How much work is done by nonconservative forces during the 10 second interval |

## What is the radius of the starAssume a distant star functions as a blackbody at a temperature of 12,000 K and produces light at a rate of 7.72 x 1030 W. What is the radius of the star |

## Questiona person bending forward to lift a load with hisquestiona person bending forward to lift a load with his back rather than with his knees can be injured by large forces |

## Find out the minimum diameter of the raftIf the surface of the water is calm and the pool is h = 1.52 m deep, find out the minimum diameter of the raft that would prevent the diamond from being seen. |

## Determine the mass of sand added to the bucketA 29.5 kg block is connected to an empty 1kg bucket by a cord running over a frictionless pulley. The coefficient of static friction between the table and the block is 0.50 and the coefficient of kinetic friction between the table and the block is.. |

## Illustrate what is the minimum coefficient of frictionIllustrate what is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road? |

## How much work does the rock do on the bulldozerA bulldozer pushes a large rock, and the two move forward together. The bulldozer does 1500 J of work on the rock. How much work does the rock do on the bulldozer |

## What is the area of contact between each tire and the groundA person who weighs 645 N is riding a 94.9 N mountain bike. what is the area of contact between each tire and the ground |

## How much charge does it moveA 1.50 V battery supplies 0.350 W of power to a small flashlight for 20.0 min. How much charge does it move |

## Find how much will it extend if it is made of steelThe cable of a hoist has a cross-section of 80 mm2. The hoist is used to lift a crate weighing 500 kg. How much will it extend if it is made of steel |

## Estimate the magnitude of the electrostatic forceTwo very small spheres are initially neutral and separated by a distance of 0.60 m. What is the magnitude of the electrostatic force that acts on each sphere |

## Find the capacitance of the second capacitorA capacitor is connected across the terminals of an ac generator that has a frenquency of 460 Hz and supplies a voltage of 24 V. When a second capacitor is connected in parallel with the first one, the current from the generator increases by 0.18 A. .. |

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