Recent content by lovepiano25

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    Does the Asteroid Pose a Threat to Earth?

    An asteroid is at a distance of 2 x106 km from Earth and is moving with a speed of 10 km/s. Without gravitational pull, the asteroid would miss Earth by a perpendicular distance of 25,000 km from the center of Earth. What is the closest distance between the asteroid and Earth? Does it hit...
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    Calculating the average divergence of the flow of fluid in a box.

    Homework Statement A cube of side 5cm is placed in a fluid. For the following velocity values, calculate the average divergence of the flow. Is there a source or sink within this box? The velocities are given in cm/s. The cube is oriented so that the +z axis exits the front face, the +x axis...
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    Physics What Can Medical Physics Residents Expect for Salary and Job Opportunities?

    I am pursuing a career in Medical physics. I have heard that starting 2012, people who earn MS or Phd in medical physics are required to go through 2 year medical residency for board certification. I was wondering how much can we expect to get paid during medical residency? With masters degree...