A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 K to 373 K. If 18.0 J of work is done by the gas during this process, what is the mass of helium present?

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Explain quantum mechanice yields classical mechanics : As is often said, quantum mechanice yields classical mechanics when h approaches 0. What result is obtained classically for p(v,T) when h approaches 0? Why is this relation unsatisfactory |

Determine what is the value of the voltage source : A two resistor voltage divider consists of a 10 k and a 15 k ohm resistor, with the 10 k resistor connected to the voltage source and the 15 k resistor connected to ground. If the output voltage is 2.5 V, what is the value of the voltage source |

What is the present value of the new drug : Once the patent expires, other pharmaeutical companies will be able to produce the same drug and competiton will likely drive profits to zero. What is the present value of the new drug if the interest rate is 8% per year? |

What are the benefits of a layered design : What is enterprise computing and what are the available technologies for it and what are you going to cover in the remainder of this report? |

Calculate the mass of helium present : A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 K to 373 K. what is the mass of helium present |

Explain what is the eigenvalue : Show that the function si=x*e^(-ax^2) is an eigenfunction of the operator d^2/dx^2 - 4(a^2)(x^2). What is the eigenvalue. |

Find final pressure after gas has returned to initial temp : A container having a volume of 0.2 m3 contains nitrogen at a pressure of 100 kPa and a temperature of 15°C. If 0.2 kg of nitrogen is pumped into this container, calculate the final pressure after the gas has returned to its initial temperature. |

Estimate the firms current stock price to be : which is also expected return on new investment. Its earnings are expected to grow forever at a rate of 5.5% per year. If its next dividend is due in one year, what do you estimate the firms current stock price to be? |

Find the net work done during the complete cycle : A gas is expanded from a volume of 1.0 L to 2.8 L at a constant pressure of 3.0 atm Find the net work done during the complete cycle |

## Find out the magnitude of the electric fieldA uniform electric field exists in the region between two oppositely charged parallel plates 1.67cm apart. A proton is released from rest at the surface of the positively charged plate and strikes the surface of the conflicting plate in a time int.. |

## Determine the electric potential energy of this groupFour identical charges (+3.0µ C each) are brought from infinity and fixed to a straight line. Determine the electric potential energy of this group |

## Illustrate what is an area of gry squared in points squaredA common measure for length in the publishing business is a point, defined as 1/72 inch. Illustrate what is an area of 0.50 gry squared in points squared? Round answer to the nearest hundreth. |

## Determine the image distance using the mirror equationAn object 6.0mm high is placed 18cm from a convex mirror of radius of curvature 18cm. Determine the image distance using the mirror equation |

## What is the associated uncertaintyTime standards are now based on atomic clocks. A promising second standard is based on pulsars, which are rotating neutron stars (highly compact stars consisting only of neutrons). |

## How long will it take to strike the groundWhat is the velocity of the plank relative to the surface of ice. |

## Calculate the mass of the planet from this informationIf 20 grams of hot water at 80 C is poured into a cavity in a very large block of ice at 0 C, what will be the final temperature of the water in the cavity? How much ice should melt in order to cool the hot water down to this temperature. |

## Illustrate what speed does the ball have when cable makesFriction and air resistance are negligible. Illustrate what speed does the ball have when the cable makes an angle of 30 degrees with respect to the vertical? |

## What is the resistance between the ends of the welded barTwo cylindrical bars, each with diameter of 2.50 cm, are welded together end-to-end. One of the original bars is copper and is 0.360 m long, What is the resistance between the ends of the welded bar at 20 oC |

## What is the total optic path lengthA cylindrical tube is closed at both ends by glass plates 10.0mm thick. if the inside length of the tube is 7.5 cm, what is the total optic path length between the outer surfaces |

## Find initial position before momentarily coming to restFor the Atwood's machine, suppose the masses have an initial speed of v = 0.22 m/s and that m2 is moving upward. How high does m2 rise above its initial position before momentarily coming to rest, given that m1 = 3.5 kg and m2 = 3.1 kg. |

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