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0.085 nm photon collides with astationary electron. After the collision, the electron movesforward and the photon recoils backward. Find the momentum and the kinetic energy of the electron.
A block of metal is placed on a top of a half-sphere made of ice. The block slides on the half-shpere down to a height (h) above the ground, What is the force exerted by the half-sphere on the block
A 750- car stopped at an intersection is rear-ended by a 1730- truck moving with a speed of 16.0 .If the car was in neutral and its brakes were off, Find the final speed of the car
a rubber ball mass 0.27 kg is dropped from a height of 1.8 m onto the floor. just after bouncing from the floor the
The binding energy of a nucleus is 137.0 MeV. What is the mass defect of the nucleus in atomic mass units
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it. What is the power of one laser pulse
Someone at a fifth-floor window (20 m above the ground) hurls a ball downward at 40.0° at a speed of 14.0 m/s. How long does the ball take to reach the sidewalk
Two cesium-133 atomic clocks differ by one second in 6000 years. Assume one of the clocks gains one second in six thousand years, approximately what is the change in the number of oscillations of the light each second?
A person stands at a point 510m in front of the face of a sheer cliff. If the person shouts, how much time will elapse before an echo is heard? Assume normal air pressure
An electron is accelerated through a potential difference of 3.00 V before colliding with a metal target. What minimum-wavelength light can such an electron emit
Two wires are parallel (heading north-south). The current in each wire is northward. What is the direction of the magnetic field at the location of the right-hand wire due to the current in the left-hand wire? What is the direction of the magnetic fo..
A student sits on a rotating stool holding two 3.0 kg objects. Find the kinetic energy of the student before and after theobjects are pulled in
imagine that the only visible photons that an electron in a box of unknown length emits have wavelengths of 689nm and
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