A boat, whose speed in still water is 1.70 m/s, must cross a 260m wide river and arrive at a point 110m upstream form where it starts. to do so, the pilot must head the boat at a 45 degree upstream angle. What is the speed of the river's current?

What are the distances traveled by the tips of the hands : The hour, minute, and secondhands on a clock are 0.25 , 0.31 , and 0.37 long,respectively. What are the distances traveled by the tips of the hands in a 45 interval |

Explain attractive forces between particles are strong : In each of the following cases, does the ratio PV/nRT for a real gas have a value greater than or less than 1. a) Attractive forces between particles are strong. |

Define any indication of systematic error in either analysis : The means of the reported resultsare 68.5% C and 4.88% H. At the 95% confidence level, is there any indication of systematic error in either analysis |

Find how many revolutions did the disc make during this time : A spinning disc rotating at130 rev/min slows and stops 31 s later. How many revolutions did the disc make during this time |

What is the speed of the rivers current : A boat, whose speed in still water is 1.70 m/s, must cross a 260m wide river and arrive at a point 110m upstream form where it starts. What is the speed of the river's current |

Explain how would a decrease in the volume of a gas : How would a decrease in the volume of a gas initially heldat STP affect. The Kinetic energy of the gas if T is constant, the average speed of the gas and the total number of collision with the walls of the vessel |

Determine what is the resultant speed of the boat : A motorboat whose speed in still water is 2.60 m/s, must aim upstream at an angle of 28.5 degrees in order to travel directly across the stream. what is the resultant speed of the boat with respect to the shore |

How much work is done on it during this acceleration : A flywheel in the form of a heavy circular disk of diameter 0.600 meters and mass 200 kg is mounted on a frictionless bearing. How much work is done on it during this acceleration |

Explain what is the difference between the ideal pressure : If 1.00 mol of argon is placed in a 0.500-L container at 18.0 C, what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation) |

## How far below the water can she swimThe human lungs can function satisfactorily up to a limit where the pressure difference between the outside and inside of the lungs is one-twentieth of an atmosphere. how far below the water can she swim |

## What is the average force that the electron exerts on wallsAn electron moving in one dimension is confined between two walls seperated by a distance L = 10^-10 m. What is the average force that the electron exerts on the walls |

## What is the magnitude of average drag force exerted on carA 8760-kg car is travelling at 27.8 m/s when the driver decides to exit the freeway by going up a ramp. What is the magnitude of the average drag force exerted on the car |

## It has been suggested that rotating cylinders about 10 miit has been suggested that rotating cylinders about 10 mi long and 5.0 mi in diameter be placed in space and used as |

## Determine the number of moles of gasA rigid tank contains 1.50 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 27.4 atm to 4.30 atm |

## How much force on the satellite due to the sunlightA satellite with 2 rectangular solar cells wings with A=60m2, when the wings normally face the sun with an intensity I=1200 W/m2, how much force on the satellite due to the sunlight |

## Determine what is the phase angle of i1 in the caseat a junction in an a-c circuit a single current divides into two seperate currents I1=10,, I2=5, where I1 lags I2 by 30, use comlex numbers to represent currents. |

## What impluse is delivered to the truck by the carA 1600·kg car traveling with a velocity of 6·m/s north collides head-on with a 3200·kg truck traveling with a velocity of 4·m/s south. What impluse is delivered to the truck by the car |

## Stethoscope what is a stethoscope what is itswhat is a stethoscope? what is its use?hjhfhhghhghgfhdjfhsufgseuygfeyfgfgufgrfgreufgrfbutguubfgbrfrtrtfr |

## What is the number of turns per meterThe magnetic field produced by the solenoid in a MRI system has a field strength of 8.63T, What is the number of turns per meter of length of the solenoid |

## A stuntman drives a car over the top of a hillA stuntman drives a car over the top of a hill, the cross section of which can be approximated by a circle of radius R = 250 m. What is the greatest speed at which he can drive without the car leaving the road at the top of the hill? |

## Evaluate how much will its temperature increaseAssuming all the energy is retained by the hammer head, evaluate how much will its temperature increase? (Chead=0.11 kcal/kg degrees C) 1/2 m v^2 = mc Deltatemp solve for deltaTemp. |

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