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?

One string of a certain musical instrumen : One string of a certain musical instrument is 72.0 cm long and has a mass of 8.76 g . It is being played in a room where the speed of sound is 344 m/s . a) To what tension must you adjust the string so that, when vibrating in its second overtone, .. |

Lightbulb is plugged into standard-resistance of bulb : A 100 W lightbulb is plugged into a standard 120 V outlet. How much does it cost per month (30 days) to leave the light turned on continuosly? Assume electrical energy costs 7.5/kWh. (Enter dollars with no unit) What is the resistance of the bulb? Wh.. |

Calculate the current and calculate the current density : A potential difference of 4.80 V will be applied to a 43.00 m length of 18-gauge copper wire (diameter = 0.0400inches). Calculate the current. Calculate the current density. Calculate the electric field. Calculate the rate at which thermal energy wil.. |

A nichrome heater dissipates : A Nichrome heater dissipates 450 W when the applied potential difference is 110 V and the wire temperature is 700°C. What would be the dissipation rate if the wire temperature were held at 200°C by immersing the wire in a bath of cooking oil? The app.. |

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.. |

## What is the radius of the resulting pathA car of mass = 1200 traveling at 65 enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires. What is the radius of the turn if = 20 (assuming the car continues in unifo.. |

## How much energy would be available through fusionThen the driver sees a red light up ahead at next intersection, and starts slowing down at the constant rate. The car stops at the red light, 180 {rm m} from where it was at t = 0. |

## What is the total momentum of the systemTwo bumper cars are driving directly toward one another. The first car, mass m1 = 150 kg, What is the total momentum of the system |

## How long is the bullet in the barrelA 15.0 g bullet is fired at a muzzle velocity of 3250 m/s from a high powered rifle with a mass of 4.75 kg and barrel of lenght 75.0 cm. How long is the bullet in the barrel |

## What is the highest compression of the springWhat is the highest compression of the spring for a perfectly inelastic impact. |

## Determine how much energy is dissipated as heatA current given by I(t)=3t^3 where I is in amps when t is in seconds, passes through a 5- resistor. How much energy is dissipated as heat between t=3 s and t=5 s |

## 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 |

## How much work must be completed on the particleA rotating cylinder about 16- {rm km} long and 6.8 -km in diameter is designed to be used as a space colony. With what angular speed must it rotate so that the residents on it would experience the similar acceleration because of gravity as on Eart.. |

## Find the coefficient of volume expansion of the glassA glass flask whose volume is 1000cm3 at a temperature of 0.200?C is completely filled with mercury at the same temperature. find the coefficient of volume expansion of the glass |

## What is the normal force on the object in newtonsAn object with a mass of 23 kg lies on a horizontal frictionless surface. What is the normal force on the object in Newtons |

## A dietary calorie is actually a kilocalorieA dietary Calorie is actually a kilocalorie (note that by convention a capital 'C' is always used to indicate a dietary calorie and a lower case 'c' is used otherwise). Given that 1 cal = 4.186 J express the average daily dietary intake of a person.. |

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