A 1.80 mH inductor is connected in series with a dc battery of negligible internal resistance, a 0.840 k-ohm resistor, and an open switch. 1.How long after the switch is closed will it take for the current in the circuit to reach half of its maximum value ? 2.How long after the switch is closed will it take for the energy stored in the inductor to reach half of its maximum value?

Uniform magnetic field along the axis of the coil : A coil of wire with 210 circular turns of radius 3.30 cm is in a uniform magnetic field along the axis of the coil. The coil has R= 42.8 ohm. At what rate, in teslas per second, must the magnetic field be changing to induce a current of 0.155 A in th.. |

An egg rolls off kitchen counter and breaks as it hits floor : An egg rolls off a kitchen counter and breaks as it hits the floor. How large is the impulse that the floor exers on the egg, and how large is the force exerted on the egg by the floor when stopping it? The counter is 1.0mhigh, the mass of the egg is.. |

What is the effective load resistance of the secondary coil : A transformer consists of 300 primary windings and 832 secondary windings. 1. If the potential difference across the primary coil is 22.5 V , what is the voltage across the secondary coil? 2. If the potential difference across the primary coil is 22... |

What will be the current in the secondary coil : You need a transformer that will draw 16 W of power from a 220 V (rms) power line, stepping the voltage down to 12 V (rms) What will be the current in the secondary coil? Express your answer to two significant figures and include the appropriate un.. |

Current in the circuit to reach half of its maximum value : A 1.80 mH inductor is connected in series with a dc battery of negligible internal resistance, a 0.840 k-ohm resistor, and an open switch. How long after the switch is closed will it take for the current in the circuit to reach half of its maximum.. |

What is the angular frequency of the charge oscillations : A 18.0 uF capacitor and a 5.40 mH inductor are connected in series with an open switch. The capacitor is initially charged to 6.50 uC. What is the angular frequency of the charge oscillations in the capacitor after the switch is closed? |

Explain why the periscope no long works : A periscope for a submarine uses two totally reflection 45°-45°-90° prisms with total internal reflection on the side adjacent to the 45° angles. It springs a leak, and the bottom prism is covered with water. Explain why the periscope no long works. .. |

What is the self-inductance of this solenoid : An ideal toroidal solenoid has a cross-sectional area of 0.500 cm^2 , a mean radius of 15.0 cm , and 1600 turns. What is the self-inductance of this solenoid? |

What is the mutual inductance of combination of two coils : A 10.0 cm -long solenoid of diameter 0.400 cm is wound uniformly with 800 turns. A second coil with 50.0 turns is wound around the solenoid at its center. What is the mutual inductance of the combination of the two coils? |

## Determine the magnitude of the momentum of each photonReview Conceptual Example 7 as background for this problem. Determine the magnitude of the momentum of each photon |

## Find how far did it travel in this timeA train is slowing down from 46 m/s to 12 m/s in 9.0 s. Assume constant acceleration. How far did it travel in this time |

## Calculate the force required to pull a copper ballCalculate the force required to pull a copper ball of radius 3.00 cm upward through a fluid at the constant speed 8.00 cm/s |

## Q1 calculate the threshold wavelength in nm of a metal ifq1. calculate the threshold wavelength in nm of a metal if that metal emits an electron with a kinetic energy of 6.32 |

## Evaluate the mass of the diskA solid cylindrical disk has a radius of 0.15 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. What is the mass of the disk |

## Determine the maximum height reached by the projectileA projectile is fired with an initial speed of 65.2 m/s at an angle of 34.5 degrees above the horizontal on a long flat firing range. determine the maximum height reached by the projectile |

## Calculate the electrostatic forceIn the Bohr theory of the hydrogen atom, an electron,oves in a circular orbit about a proton, where the radius of the orbit is 9.51 A. find the electrostatic force between the two |

## How much energy was converted into heat on the way downA 1051 kg coasts down a hill 40 m high with its engine off and the driver's foot pressing the brake pedal. How much energy was converted into heat on the way down |

## Illustrate what force should the second crewman pullillustrate what force should the second crewman pull so that the net force of the two crewman is in the forward direction? |

## Show that the average force exerted by the seat beltIn fact, the increased normal force at these large angles makes force of friction too large to move the lawnmower at all. |

## Alculate the change in the magnetic flux through the coilA 310 turn solenoid with a length of 18.0 cm and a radius of 1.30 cm carries a current of 1.70 A. Calculate the change in the magnetic flux through the 4-turn coil during the same period |

## Evaluate the height of the imageA -6.0 diopter lens is held 10.0 cm from an ant that is 1.0mm high. What is the height of the image |

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