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Suppose you have a near-point distance of 16 cm. The angular resolution of the eye is determined by diffraction (see the Rayleigh criterion) and is approximately 2 arcmin. (Note that 1 degree=60 arcmin.) What is the smallest object your bare eye can resolve? Please show your work.
A construction worker accidentally drops a brick from a high scaffold. What is the velocity of the brick after 4.0 s
A flea pulls on a puck with force 7 microN at an angle of 30?. Another flea pulls on the puck with force 2 microN at an angle of -60?.
A driving force of the form F(t)=(0.237 N) sin(2pi*f*t) acts on a weakly damped spring oscillator with mass 5.72 kg, Find the amplitude of the oscillator's steady-state motion when the driving force has this frequency
Medical x rays are taken with electromagnetic waves having a wavelength around 0.104nm. What is the wave number of such waves
A satellite is in orbit 4.2*10^7 m from the center of Earth with a speed of 7,800 m/s. what is the mass of the satellite
An airplane can be made invisible to radar by coating the plane with a thin layer of an antireflective material. If radar waves have a wavelength of 3.0 cm.
Calculate the potential energy stored in the bow, if the arrow of mass 5.50 10-2 kg leaves the bow with a speed of 45.0 m/s. Assume that mechanical energy is conserved.
explain the electric flux through the surface of the cube. Calculate the volume charge density of the atmosphere, assuming it to be uniform between 270 and 420 m.
A 59kg woman trips while walking down the street. She stumbles forward and falls onto her outstretched right hand. At the instant her hand contacts the ground her whole body is moving downward at a velocity of 9m/s and has a downward acceleration ..
A 72.3 kg man carrying a 5.23 kg box gets on an elevator. As the elevator accelerates upwards at 0.224 m/s^2, he feels the box is heavier, During this time, what is the weight on the floor from his feet
A baseball outfielder throws a 0.150-kg baseball at a speed of 40.4 m/s, What is the kinetic energy of the baseball at the highest point of its trajectory
When yellow light from a sodium lamp shines on a certain photocell, What potential would be needed to stop the electrons if light with 4000 A is used
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