Two bodies oscillate in SHM with the same amplitude (7.90 cm) and frequency but out of phase so that body A always has a lead in phase angle of 60° over body B. Find the displacement of A when the displacement of B is 7.90 cm.

## Find the cutoff wavelength for platinumThe work function for platinum is 6.35 eV. Find the cutoff wavelength for platinum |

## How far should you place the lens from the slideA slide projector needs to create a 98 cm high image of a 2.0 cm tall slide. The screen is 300 from the slide. How far should you place the lens from the slide |

## Estimate the amplitude of the oscillationsA simple harmonic oscillator consists of a block of mass 2.00 kg attached to a spring of spring constant 110 N/m. What is the amplitude of the oscillations |

## How much time does it take for the package to reach groundA 61 kg speed skater with the velocity of 16 m/s comes into a curve of 18 m radius. How much friction should be exerted between skates and ice to negotiate the curve. |

## What is the new fundamental frequencyAn open organ pipe (i.e., a pipe open at both ends) of length Lo has a fundamental frequency Fo, what is the new fundamental frequency |

## How much water is need to carry away the heatA man strides across a bed of embers. Assume the glowing charcoal is covered with a thin layer of ash 0.50 mm thick and is at a temperature of 650C. The thermal conductiviity of ash and charcoal is 1.5 W/ (mxK). (a) Estimate the heat transferred t.. |

## Obtain the friction force on the boxA 100N box initially at rest is pulled by a horizontal rope on a horizontal table the coefficients of kinetic, What is the friction force on the box if the pull is 35N and 75N |

## How long was the mallet in contact with the ballA 0.50-kg croquet ball is initially at rest on the grass. When the ball is struck by a mallet, the average force exerted on it is 225 N. how long was the mallet in contact with the ball |

## Find to what temperature would you have to heat the ringYou somehow manage to get a gold ring with inner diameter 2.19 cm stuck on your finger, even though your knuckle has a diameter of 2.2 cm. To what temperature would you have to heat the ring |

## Determine how long is each rodAt one time, television sets used "rabbit-ears" antennas. Such an antenna consists of a pair of metal rods. How long is each rod |

## Determine the maximum distance the center of the coinA coin placed on a turntable rotating at 33.0 rev/min will stay there if its center is placed no further than 7.2 cm from the axis of rotation. What is the maximum distance the center of the coin can be placed from the axis |

## While john is traveling along an interstate highway hewhile john is traveling along an interstate highway he notices a 153 mile marker as he passes through town. later john |

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