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Two stars 15 light-years away are barely resolved by a 67 -cm (mirror diameter) telescope. How far apart are the stars? Assume λ=550nm and that the resolution is limited by diffraction.
Unpolarized light passes through six successive Polaroid sheets each of whose axis makes a 41 °angle with the previous one What is the intensity of the transmitted beam?
A parallel plate capacitor without a dielectric inserted is connected to a battery. The energy density is 5 J/m3 initially.
a square plate of copper with .5m sides has no net charge and is placed in a region of uniform electric field of 80.0
An electron with kinetic energy 2.10 keV circles in a plane perpendicular to a uniform magnetic field. Find the frequency of circling
A coordinate system S' moves with constant velocity along the x axis of a second coordinate system S. If, as measured in S, two events occur at the same place and are separated in time by deltat, what is the spatial separation of these two events as ..
What is the magnitude of the torque on the disk about the z axis due to F1? What is the magnitude of the torque on the disk about the z axis due to F2? What is the magnitude of the torque on the disk about the z axis due to F3
A Hydrogen atom and a Helium atom each with 4 eV of KE approach a thin barrier 6 MeV high which has the greater probability of tunneling through the barrier? Explain.
You are on a team that will recover a ship from the sea. You have been given the task to perform a few calculations to move your team forward. find the tension when the body is completely out of water
The lumberjack runs to the other end of the log, attaining a velocity of +4.74 m/s relative to the shore, and then hops onto an identical floating log that is initially at rest. Neglect any friction and resistance between the logs and the water. W..
a 0.072m x 0.045 m steel beam of length 3.7m is heated from 293kelvin to 372kelvin. what is the new length of the beam?
A 128g gas sample was filled in a 50.0L closed container. At 25 degrees Celsius, the pressure inside the container was measured to be 1.95 atm. What is the molar mass of the gas
Lens Maker: Compute the focal length of a lens from its index of refraction and radii of curvatures of the two refracting surfaces. If the index of refraction of the glass utilized is 1.50, one surface is concave and has a radius of curvature of 13.4..
A hollow cone (like a party hat) has vertex angle 2?, slant height L, and surface charge density ?. It spins around its symmetry axis with angular frequency ?. What is the magnetic field at the ti
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