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Unpolarized light falls on a stack of three polarized sheets. The transmission axes of the top and bottom sheets are at 90 degrees by respect to each other. The middle sheet has its transmission axis aligned at 45 degrees by respect to the top and bottom sheets. What fraction of incident unpolarized intensity is transmitted during the stack?
A glass flask whose volume is 1000cm3 at a temperature of 0.500?C is completely filled with mercury at the same temperature. compute the coefficient of volume expansion of the glass
A 3.00 kg block starts from rest at the top of a 30° incline and slides a distance of 1.80 m down the incline in 1.30 s. Find the magnitude of the acceleration of the block
One hundred turns of (insulated) copper wire are wrapped around a wooden cylindrical core of cross-sectional area 1.20 × 10?3 m2. how much charge flows through a point in the circuit during the change
A child holds a candy bar 10.0 cm in front of a convex mirror andnotices that the image is only one-half the size of the candy bar. What is the radius of curvature of the mirror?
A proton and an electron have the same kinetic energy upon entering a region of constant magnetic field. What is the ratio of the radii of their circular paths
A 300 kg elevator is being pulled upwards by a steel cable at a constant velocity. What is the net force on the elevator
Assume a satellite is in a circular orbit 3.0 Earth radii above the surface of the Earth (4 Earth radii from the center of the Earth). Compute by how much does it have to increase its speed
Assume that you are an observer located at a latitude of 40degrees north (on Earth). Draw a fully labeled diagram showing from your vantagepoint: What is the altitude or elevation of Polaris?
As the sun rises over a still pond, an angle will be reached where its image seen on the water's surface (n(subw)=1.333) will be completely polarized in a plane parallel to the surface. What is the angle between the reflected and refracted beams
An electric stove burner with 35-ohm resistance consumes 1.5 kW of power. At what voltage does it operate
A 1200-kg car rolling on a horizontal surface has speed = 60 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2m . What is the spring stiffness constant of the spring? in N/m
On a certain game show, contestants spin a wheel when it is their turn. One contestant gives the wheel an initial angular speed of3.10rad/s. Through what angle has the wheel turned when its angular speed is1.55rad/s
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