A metal surface is susceptible to a photoelectric threshold frequency of 8.529 x 10^{14} Hertz. Will the monochromatic UV light sources of wavelengths 283 nanometer, 342 nanometers, and 363 nanometers be able to eject photoelectrons from the metal, if so Obtain the speed of the fastest electron ejected?

## Two masses are on a frictionless horizontal surfaceTwo masses are on a frictionless horizontal surface moving by 2 perpendicular directions (m1=m & m2=3m). After the collision the m1 mass stops. What is the velocity of mass m2 after the collision, if before the collision of the masses v1=5m/s and v2=.. |

## Find the recoil velocityBlocks with masses of 2 , 4 , and 6 are lined up in a row on the frictionless table. All three are pushed forward by a 56 force applied to the 2 block. How much force does the 4 block exert on the 6 block. |

## What is the speed of the water leaving the nozzleA 10 Newton effort force is required to lift a 10kg box just off the ground. What is the effort required to lift the box off the ground using a 3m long lever. |

## A force of 75n is applied horizontally to a box of massquestion a force of 75n is applied horizontally to a box of mass 10kg moving with an initial speed of 4ms on a level |

## A soccer player kicks the ball toward a goal that is 250 ma soccer player kicks the ball toward a goal that is 25.0 m in front of him. the ball leaves his foot at a speed of |

## A helium neon laser emits light that has a wavelength ofa helium neon laser emits light that has a wavelength of 632.8 nm. the circular aperature through which the beam |

## What minimum speed does your rocket needYou have been visiting a distant planet. Your measurements have determined that the planet's mass is four times that of earth but the free-fall acceleration at the surface is only one-fourth as large |

## Question1there are two identical vessels a and b of volumequestion1there are two identical vessels a and b of volume v each one empty and other containing the block of wood of |

## Discover its terminal velocity of descent in the waterA bowling ball, which is approximately a smooth round sphere 8.6 inches in diameter and weighing 15 lbf, is dropped into a swimming pool. Discover its terminal velocity of descent in the water. |

## Calculate the frequency of the oscillatorA rope 2.0-m-long has a mass of 0.100 kg. The tension is 65 N. calculate the frequency of the oscillator |

## At 6 am of the next day the wave height is 4m the watera storm generates large waves in the pacific ocean. on november 25 208 6pm swell with a wave height of 5m reaches an |

## Determine the wavelength of the second sourceLight of wavelength 565 nm incident on a pair of slits produces an interference pattern on a distant screen in which the separation between adjacent bright fringes at the center of the pattern is 0.569 cm. What is the wavelength of the second sourc.. |

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