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1.) Two paint buckets are connected by a lightweight rope passing over a pulley of negligible mass and friction.
a.) As shown in the figure above, the system is released from rest with the 12kg bucket 2m above the floor. Use energy conservation to find the speed with which this bucket strikes the floor.
b.) Suppose the pulley had appreciable mass, such that its moment of inertia = 3kgm^2 but has no friction. Find the speed with which this bucket strikes the floor in this case.
the red color of hemoglobin is a consequence of the strong absorption by this protein of yellow and green light in the
An object is placed 12 cm in front of a concave mirror whose focal length is 20 cm. The object is 3.8 cm tall. Establish (a) the location of the image, taking a real image as a positive value and a virtual image as a negative value.
A bowling ball (m = 1200 kg), moving to the right with a speed of 3.0 m/s collides head on (in a perfectly inelastic collision) with the a ball of wax (m = 240 kg) which is moving to the left with a speed of 5.0 m/s
Visible light passes through a diffraction grating that has 900 slits per centimeter, What is the difference between these wavelengths
A parallel plate capacitor has a charge of 2.66X 10^-11 C after being charged by a 15 V battery. The plates are seperated by 2.0 mm of air
Two particles are fixed to an x axis: particle 1 of charge q1 = +1.00 10-8 C at x = 20 cm and particle 2 of charge q2 = -4.50q1 at x = 70 cm. At what coordinate on the axis is the net electric field produced
A student is ice fishing in Colorado on a frozen lake over spring break. He cuts a circular hole in the ice that has a diameter of 0.50 m. Find the mass of the ice cut out to make the hole
a potter;s wheel is a uniform disc of diameter 1m and a mass of 70kg. what min total of friction force must be applied to the disk
A person with mass mp = 70 kg stands on a spinning platform disk with a radius of R = 2.13 m and mass md = 187 kg. What is the final angular velocity of the disk
A semicircle of radius a is charged.positive charge +Q is distributed uniformaly around the left half of the semicircle, what are the magnitude and the direction of the electric field
at the 18th green of the u.s. open you need to make a 19.9 ft putt to win the tournament. when you hit the ball giving
Show that the total charge contained in the charge distribution is Q. Show that the electric field in the region r = R is identical to that produced by a point charge Q at r = 0.
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