A heat engine operates between a reservoir at 28°C and one at 432°C. What is the maximum efficiency possible for this engine?

## Find the total energy contained in the beamA small helium-neon laser emits red visible light with a power of 3.2 mW in a beam with a diameter of 2.5 mm. what is the total energy contained in a 1.00 m length of the beam |

## Calculate the angle of incidence for this rayA ray of light originating in oil (n = 1.21) is incident at the Brewster angle upon a flat surface of a quartz crystal (n = 1.458). Determine the angle of incidence for this ray |

## What is the direction and magnitude of the frictional forceA 2,493-kg car is moving down a road with a slope (grade) of 14% at a constant speed of 13 m/s. What is the direction and magnitude of the frictional force? |

## Estimate the power dissipated in the resistorn a series RLC circuit, the resistance is 26 O, the capacitance is 68 µF and the inductance is 40 mH. Find the power dissipated in the resistor |

## What is the volume of waterPlease show steps: Hydraulic engineers in the United States often use, as a units of volume of water, What volume of water, in acre-feet, fell on the town |

## Determine the power output of the speakerAt a recent rock concert, a dB meter registered 110 dB when placed 2.00 m in front of a loudspeaker on the stage. What was the power output of the speaker |

## What is the percentage lost by the windowA wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.11 m2 and whose thickness is 8 mm. Treat the wall as a slab of the insulating material Styrofoam whose area and thickness are 15 m2 and 0.10 .. |

## Determine the rate at which current must changeA solenoid of radius 1.6 cm has 351 turns and a length of 10 cm.The permeability of a free space is 1.25664 × 10^?6 V · s/A · m. Find the rate at which current must change through it to produce an emf of 56 mV |

## What is the momentum of the carA 23 bullet traveling 245 penetrates a 3.0 block of wood and emerges cleanly at 195 .If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges. |

## How far away is the milky way from our nearest neighbourHow far away is the Milky Way from our nearest neighbour, Andromeda Galaxy, if Andromeda contains roughly the similar number of stars and attracts the Milky Way with a gravitational force of 2.4 x 10^30 N. |

## Estimate the power dissipated by the circuitA series circuit with R=20ohms, C=330 MuF and L=30 mh, is connected to an AC sourceof amplitude 160v and frequencey of 60 Hz, Whats the power dissipated by the circuit |

## Determine the final temperature of the systemHakeem throws an 8.50 g ball straight down from a height of 2.0 m. The ball strikes the floor at the speed of 7.5 m/s. What was the initial speed of the ball? Suppose that air resistance is negligible. |

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