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Unpolarized light of intensity I0 passes through six successive Polaroid sheets each of whose axis makes a 40? angle with the previous one. What is the intensity of the transmitted beam?
A rifle with the barrel length of 62cm fires a 12g bullet with a horizontal speed of 380m/s. The bullet strikes a block of wood and penetrates to a depth of 14cm. What resistive force (assumed to be constant) does the wood exert on the bullet? How lo..
A 23.00 kg chair initially at rest on a horizontal floor requires a 364N horizontal force to set it in motion. Once the chair is in motion, a 328N horizontal force keeps it moving at a constant velocity. A 23.00 kg chair initially at rest on a horizo..
A 14 g ball of clay travelling east at 3.0 m/s collides with a 30 g ball of clay travelling north at 2.00m/s. What are the speed and the direction of resulting 44 g ball of clay.
Two identical point charges are fixed at opposite corners of a square whose sides have a length of A test charge, Determine the speed of the test charge when it reaches the center of the square
What is the tangential velocity of a satellite in a circular orbit 300km above the surface of the Earth, How long does the satellite take to complete one orbit
Bob, of mass m, drops from a tree limb at the same time that Esther, also of mass m, begins her descent down a frictionless slide. If they both start at the same height above the ground, which is true about their kinetic energies as they reach the gr..
An electric field is set up between two parallel plates, each of area 2.2 m2, by putting 1.0 C charge on one plate and the -1.0 C charge on the other. The plates are separated by 4.0 mm. What is the magnitude of the electric field between the plates ..
The two metal objects in the figure have net charges of +68 pC and -68 pC, which result in a 28 V potential difference between them, What is the capacitance in picofarads of the system
A child on a swing of length R= 2 meters is given an initial velocity v=8.9 m/s. Calculate the height from the bottom when the cord just goes slack, and the child leaves the circular path
The mass of an object is 332 g, and its volume is determined to be 25 cc. What is the mass density of the object
A circuit contains six 210 lamps and a 14 heater connected in parallel. The voltage across the circuit is 120V. If the circuit has a 12A fuse, will the fuse melt if all the lamps and the heater are on.
A bicycle wheel is rotating at 40rpm when the cyclist begins to pedal harder, giving the wheel a constant angular acceleration of 0.45rad/s2, What is the wheel's angular velocity, in rpm, 10s later
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