A 3.00- length of copper wire at 20 has a 1.20--long section with diameter 1.8 and a 1.80--long section with diameter 0.90 . There is a current of 2.5 in the 1.8 -diameter section. 1.What is the current in the 0.90 -diameter section? 2.What is the magnitude of in the 1.8 -diameter section? 3.What is the magnitude of in the 0.90 -diameter section? 4.What is the potential difference between the ends of the 3.00-length of wire?

What is the density of the fluid : An aluminum cylinder is suspended in an unknown fluid by a spring scale. Outside the fluid, the object weighs 20N. In the fluid it weighs 10N. If the cylinder has a volume of 10–4m3, what is the density of the fluid? |

What is tension in the string as it passes through vertical : A small rock with mass 0.12 is fastened to a massless string with length 0.80 to form a pendulum. The pendulum is swinging so as to make a maximum angle of 45 with the vertical. Air resistance is negligible. |

What is resistance ratio RA-RB-measured between their ends : Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1.0 mm. Conductor B is a hollow tube of outside diameter 4.1 mm and inside diameter 3.1 mm. What is the resistance ratio RA/RB , measured b.. |

Calculate the temperature at which a tung- sten filament : Calculate the temperature at which a tung- sten filament that has an emissivity of 0.25 and a surface area of 6.6×10?5 m2 will radiate energy at the rate of 51Win a roomwhere the temperature is 26?C. The Stefan-Boltzmann constant is 5.6696 × 10?8 W/m.. |

What is the current in the diameter section : A 3.00- length of copper wire at 20 has a 1.20--long section with diameter 1.8 and a 1.80--long section with diameter 0.90 . There is a current of 2.5 in the 1.8 -diameter section. What is the current in the 0.90 -diameter section? What is the magnit.. |

Silver is the best heat conductor of all metals : A pipe 0.026 m in diameter and 0.22 m long can transfer 3476 J of heat per second with a temperature difference across the ends of 7?C. Compare this performance with the heat transfer of a solid silver bar of the same di- mensions by finding the rati.. |

Find the student''s final angular velocity : A student sits on a swivel seat. Initially the student is at rest, holding a spinning bicycle wheel that has an angular velocity of 10.2 rad/s (see figure below). The student turns the spinning wheel upside down, reversing the direction of its angula.. |

How much heat is lost through the window : A Thermopane window of area 6.8 m2 is constructed of two layers of glass, each 5.4mm thick and separated by an air space of 2 mm. If the inside is at 12?C and the outside is at ?36?C, how much heat is lost through the window? The thermal conductivity.. |

Sound emerging from door spreads uniformly in all directions : A rock group is playing in a bar. Sound emerging from the door spreads uniformly in all directions. The intensity level of the music is 37 dB at a distance of 5.99 m from the door. At what distance is the music just barely audible to a person with a .. |

## How much heat is expelled from the engineA gasoline engine absorbs 4190 J of heat and performs 3170 J of mechanical work for each turn of the engine shaft |

## Determine the magnitude of the forceTwo tiny conducting spheres are identical and carry charges of -16.6C and +56.3C, Determine the magnitude of the force that each sphere now experiences |

## What is the resulting compressional force on the earthWhat is the resulting compressional force on Earth. Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase. |

## Estimate the power plants thermal efficiencyA typical coal-fired power plant burns 340 metric tons of coal every hour to generate 750MW of electricity. 1 metric ton= 1000 kg. What is the power plant's thermal efficiency |

## What is the net charge contained by the cubeClosed gaussian surfuce in the shape of a cube of edge length 2.00 m, with one corner at x=5.00m, y=4.00m, what is the net charge contained by the cube |

## How long battery can power car whose charging system failedThe reserve capacity (RC) of a car battery is defined as the number of minutes the battery can provide 25.0A of current at a potential difference of 10.5V. |

## Calculate the relativistic momentum of the spacecraftA spacecraft has a nonrelativistic (or classical) momentum whose magnitude is 7.0 1012 kg · m/s. Find the relativistic momentum of the spacecraft |

## Estimate the maximum height reached by the projectileA projectile is fired with an initial speed of 61.7m/s at an angle of 31.9^\circ above the horizontal on a long flat firing range. Determine the maximum height reached by the projectile |

## What is the frequency of vibrationA helicopter is ascending vertically with a speed of 5.45m/s. At a height of 141m above the Earth, a package is dropped from a window. How much time does it take for package to reach the ground. |

## Determine the mass of the blockIn the above animation a massive block is attached to a spring. It is sliding back and forth on a frictionless table. The spring has a spring constant 250 N/m. Determine the mass of the block |

## What is the radius of the bigger loopTwo concentric current loops lie in the same plane. The smaller loop has a radius of 3.0 cm and a current of 12 A. The bigger loop has a current of 20 A. What is the radius of the bigger loop |

## Find the current flowing through the cell-phoneYour cell phone typically consumes about 440 mW of power when you text a friend. what is the current flowing through the cell-phone circuitry under these circumstances |

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd