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A glass beaker has a small round hole in its side. A laser beam shines horizontally through the baker, out the hole, and strikes a screen. The hole is now plugged up and the beaker is filled with water. When the plug is removed, the water streams out the hole. The laser beam still shines through the hole, but no longer strikes the screen. Rather, there is a region of light on the floor where the streaming water is landing.
Explain what has happened to the light, drawing a diagram and showing a light ray's path.
A 10,000 kg railroad car is rolling at 2 m/s when a 400 kg load of gravel is suddenly dumped in. What is the railroad cars speed just after the gravel is dumped in.
A 10.0 kg object starting from rest falls through a viscous medium and experiences a resistive force R = - b v, Find the terminal speed of the object
a helicopter propeller blade starts from rest and experiences a constant angular acceleration of 14.5 rads2. find the
In fair weather, over flat ground, there may be a downward electric field of 155 N/C. Calculate the charge density of the air
A 120-V electrical line in a home is connected to a 100-W light bulb, a 180-W television set, a 230-W desktop computer, a 240-W refrigerator and a 1050-W toaster. How much current is flowing in the line?
In the figure, a slab of mass m1 = 19kg rests on a frictionless floor, and a block of massm2 = 12 kg rests on top of theslab. Between block and slab, the coefficient of static friction is 0.30, and the coefficient of kinetic friction is 0.20.
The 1 kg standard body has an acceleration of 2.00 m/s2 at 43° to the positive direction of the x axis. What is the net force in unit-vector notation
A uniform rod of mass 2.65×10?2kg and length 0.450m rotates in a horizontal plane about a fixed axis through its center, find the angular speed of the rod after the rings leave it
A mass of 1.53 kg is attached to a spring and the system is undergoing simple harmonic oscillations by a frequency of 1.95Hz and amplitude of 7.5 cm. What is the speed of the mass when it is 3.00 cm from its equilibrium?
An object moving to the right at 0.8c is struck head-on by a photon of wavelength lambda, moving to the left. Determine the ratio of the object's mass after the collision to its mass before the collision
consider an xy plane with charges located at the following points q1 is located at x0 y0 and has a magnitude of 4 micro
A space vehicle is traveling at 3760 km/h relative to Earth when the exhausted rocket motor is disengaged, What is the speed (in km/h) of the command module relative to Earth just after the separation
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