Recent content by cyclonefb3

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    Rate of radiation coming from inside a container

    Homework Statement A aluminum container has walls that are 23 mm thick. A radiation detector measures a rate of 542 Hz outside the container. The radiation source inside the container has a half-life of 2.4 years. What is the rate of radiation from the source inside the container...
  2. C

    Diffraction Grating: Laser Illumination & 643 nm Wavelength

    I got 116 mm for both.
  3. C

    Diffraction Grating: Laser Illumination & 643 nm Wavelength

    Homework Statement A laser is used to illuminate a diffraction grating that has spacing of 637 lines per mm. The grating sits 11.6 cm in front of a screen. Find the distance to the first and second maxima (y1 and y2) for the laser wavelength of 643 nm. Express your answers in mm. Homework...
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    Calculate RMS Velocity of Air at 72 cm-Hg, 344.7013 m/s, 22.6 C

    Homework Statement If the air pressure is 72 cm-Hg (as measured with a barometer), the velocity of sound is 344.7013 m/s and the temperature is 22.6 C calculate the Vrms. Homework Equations velocity = Vrms*sqrt[(1.40*n*Na*m)/(3*density*Vol)] The Attempt at a Solution I am under...
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    Specific heat of a piece of metal dropped in water

    Homework Statement A metal container, which has a mass of 8.0 kg contains 14.3 kg of water. A 2.9-kg piece of the same metal, initially at a temperature of 190.0°C, is dropped into the water. The container and the water initially have a temperature of 15.1°C and the final temperature of the...
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    Momentum of carts of different masses

    Homework Statement The drawing below shows two laboratory carts (each has a mass of 1.0 kg) X and Y in contact with a compressed exploder spring between them. The mass on cart Y is 2.84 kg, distance A is 12 cm, distance B is 18 cm. What mass must be placed on cart X, such that after the...