A fisherman notices that wave crests pass the bow of his anchored boat every 2.84 second. He measures the distance between two crests to be 6.26 meter. Determine how fast are the waves traveling?

Compute what is the intensity of the speaker : A stereo speaker has a surface area of 0.043 m2. The acoustic power output of the speaker is 1.5 Watt. Compute what is the intensity of the speaker |

Evaluate what the frequency of the fundamental : If two successive overtones of a vibrating string are 270 Hertz and 315 Hertz, Evaluate what the frequency of the fundamental |

Compute at what frequency will it vibrate : A violin string vibrates at 296 Hertz when unfingered. Find at what frequency will it vibrate if it is fingered one third of the way down from the end |

A certain solar collector can absorb : A certain solar collector can absorb 3000 Btu in 8.7 hr. Another panel is added, and together they collect 81000 Btu in 3.2 hr. How long (hr) would it take the new panel alone to collect 81000 Btu? |

Calculate how fast are the waves traveling : A fisherman notices that wave crests pass the bow of his anchored boat every 2.84 second. Determine how fast are the waves traveling |

Obtain the wavelength of the waves you create : In a swimming pool, it is observed that the wave speed of ripples along the surface is 0.87 meter per second. Obtain the wavelength of the waves you create |

Show the effects of the adjustment on accounting equation : Show the effects of the adjustment on the accounting equation. |

Evaluate what is the hot reservoir : A heat engine operating at maximum efficiency has an efficiency of 25 percent. The temperature of the cold reservoir is 300 K. Evaluate what is the hot reservoir |

Find what is the pressure at the valve : Water flows through a horizontal pipe of cross-sectional are 10 cm2 at a pressure of 0.25 atm. Find what is the pressure at the valve |

## Q1 a rifle fires a 239 10-2-kg pellet straight upward sinceq1. a rifle fires a 2.39 10-2-kg pellet straight upward since the pellet rests on a compressed spring that is released |

## What is the maximum height of the projectilevector r=(7.07(m/s)t)i+(7.07(m/s)t-4.90(m/s^2)t^2)j is the postition of a projectile as a function of time (the x-direction is horizontal, What is the Maximum height of the projectile |

## Find how much heat is released by the water when it freezesTo help prevent frost damage, fruit growers sometimes protect their crop by spraying it with water when overnight temperatures are expected to go below the freezing mark. How much heat is released by the water when it freezes |

## What fraction of the specimens apparent volume is solidTo verify her suspicion that a rock specimen is hollow, a geologist weighs the specimen in air and in water. What fraction of the specimen's apparent volume is solid |

## How long does it take for him to reach the bottomA skier is gliding along at 5.0 m/s. On horizontal, frictionless snow. He suddenly starts down a 11 degree incline. His speed at the bottom is 15m/s. |

## Calculate what is the height from which the ball was thrownA ball is tossed from an upper-story window of a house. The ball is given an initial velocity of 7.70 m/s at an angle of 20.0o below the horizontal. Calculate the height from which the ball was thrown |

## What is the average velocity for the entire tripA car makes a trip due north for three-fourths of the time and duesouth one-fourth of the time. The average northward velocity has amagnitude of 33 m/s, and the averagesouthward velocity has a magnitude of 20 m/s. What is the average velocity (magnit.. |

## Find the focal length of the projection lensA certain LCD projector contains a single thin lens. An object 29.5 mm high is to be projected so that its upright image fills a screen 2.52 m high. Find the focal length of the projection lens |

## What is the tangential component of accelerationA 0.30-m-radiusautomobile tire accelerates from rest at a constant 2.0rad/s2 overa 5.0-s interval. What is the tangential component of acceleration |

## Find what volume of ethanol has been addedAn object with an average density of 920 kg/m3 floats in a pan containing 500 cm3 of water. Find what volume of ethanol has been added |

## Compute the magnitude of the force exerted on the roofDuring a thunderstorm, winds with a speed of 49.4 m/s blow across a flat roof with an area of 751 m2 |

## Determine how long will it take for it to come to restA 100-kg object moves on a level surface with a coefficient of friction of 0.40. If the initial velocity is 15 m/s, how long will it take for it to come to rest |

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