You are designing a machine for a space exploration vehicle. It contains an enclosed column of oil that is 1.05m tall, and you need the pressure difference between the top and the bottom of this column to be 8.00 10^-2atm. What must be the density of the oil?

Determine the peak magnetic field strength : If the lamp's 215 W output is focused on a person's shoulder, over a circular area 25.0 cm in diameter, Find the peak magnetic field strength |

How can one go about to decode a message from a wav file : how can one go about to decode a message from a wav file. the wave contain a coded message in form numbers. which is represented in the wave in form of tones |

Explain what would be the percent recovery of the solid : If a sample that is 1.200g in 25.0mL of heptane is cooled to 0 degrees C, what would be the percent recovery of the solid that would be collected? (M.P.=80 degrees C) |

What is diff of having op-amps with different amount of pole : What is the different of having op-amps with different amount of poles, as an example some one come to you and offer you this new opamp, but this person tell you that this op-amp jus have two poles in its open loop response |

What must be the density of the oil : You are designing a machine for a space exploration vehicle. It contains an enclosed column of oil that is 1.05m tall, What must be the density of the oil |

The iron dissolved in water the solution becomes acidic : When iron chloride FeCl3 is dissolved in water the solution becomes acidic. The preparation of the Fe(NO3)3 solution and the KSCN solution used 0.5 M HNO3 as the solvent instead of water. Explain why this was done. Hint: Consider Le Chatelier's Pr.. |

What is the mass of this volume of lead : A piece of wood is 0.600m long, 0.280m wide, and 7.00×10?2m thick. What is the mass of this volume of lead |

Design the circuit by appropriate values of r and l : The response of a first order series RL circuit can be represented by a first order linear time-invariant differential equation : d/dt(y) + 4 y= 4 x(t) where the input x(t) is applied across the series circuit and the output is across the resistor |

How old is the cloth : Suppose that an Egyptian farmer claims to have discovered a linen burial cloth used during Egypt's Middle Kingdom some 4000 years ago, How old is the cloth |

## With what speed will she begin to moveA 66.5kg astronaut is doing a repair in space on the orbiting space station. She throws a 2.30kg tool away from her at 3.10m/s relative to the space station, With what speed will she begin to move |

## Find the velocity of the water coming out of the hoseA tank 2.30 meters in height is filled with water to a level of 2.10 meters. At the bottom of the tank a hose is attached. Find the velocity of the water coming out of the hose |

## Find the average force the bat puts on the ballAn 0.8kg baseball with an initial velocity of 40m/s is hit with a baseball bat so that its recoil velocity is 60m/s in the exact opposite direction. what is the average force the bat puts on the ball |

## What is the time constant for this circuitSuppose that you have two identical capacitors and a single resistor. If you make an RC circuit with one capacitor, What is the time constant for this circuit |

## By how much does the potential energy of a child increaseA force vector has a magnitude of 594 newtons and points at an angle 37o of below the positive x axis. What are (1) the x scalar component and (2) the y scalar component of the vector. |

## How fast is the person runningWhile running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 64 kg person develops a power of 65W throughout a race, how fast is the person running? Assume that a running step is 1.5 m long. |

## What is the total work completed on the crateTwo 5000 kg passenger cars roll without friction (one at 1 m/s, the other at 2 m/s) toward one another on a level track. They collide, couple, and roll away together with the combined momentum. |

## How much time would it take to hit the groundA sphere of radius R has a charge Q. The electric field strength at a distance r > R is Ei. What is the ratio Ef/Ei of the final to first electric field strength if Q is halved. |

## How many times more explosive was the hydrogen bombThe hydrogen bomb detonated in 1954 had an explosive power equal to about 15 megatons of TNT, How many times more explosive was the hydrogen bomb |

## Find the magnitude of the static frictional forceThe wheel of a car has a radius of 0.320 m. The engine of the car applies a torque of 288 N · m to this wheel, What is the magnitude of the static frictional force |

## Determine the current in the primaryA transformer is to be used to provide power for a computer disk drive that needs 5.8 V (rms) instead of the 120 V (rms) from the wall outlet. determine the current in the primary |

## Determine the current in the resistorAfter 3.1 ms has elapsed, how much charge remains on the 3.00-µF capacitor, What is the current in the resistor at this time |

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