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Unpolarized light is passes through two polarizers in succession. The output intensity is 12.5% of the input intensity. What is the angle between the transmission axes of the 2 polarizer's?
If possible just a brief explanation how you got the answer?
Two titanium spheres approach each other head-on with the same speed and collide elastically. What is the mass of the other sphere
A wind is blowing straight from north to south at an unknown speed. When you hold up a piece of thread you can see that the wind stretches it out so that it points from your hand to the south. What is the speed of the wind relative to the ground
A 50.0-g bullet is shot straight upward with a muzzle speed of 350 m/s. Find the maximum height the bullet can reach
a 55 kg swimmer is standing on a stationary 175 kg floating raft. the swimmer then runs off the raft horizontally with a velocity of + 3.7 m/s realtive to the shore. Find the recoil velocity that the raft would have
a sprinter accelerates from rest to a top speed with an acceleration whose magnitude is 3.50 ms2. after achieving top
A bat flies toward a wall at a speed of 5.5 m/s. As it flies, the bat emits an ultrasonic sound wave with frequency 29.0 kHz. What frequency does the bat hear in the reflected wave
A wheel has angular acceleration of 3.5 rad/s2 and an inertiaof 11.5 kg per m2. what must be the net torque that is acting on the wheel
A closely packed coil of 500 turns carriers a current of 2.0 A. at what rate must the current change in order to induce an emf of 75V
A particle of mass m is constrained to move between two concentric impermeable spheres of radii r = a and r = b (a
Ten grams of ice at -20°C is to be changed to steam at130°C. The specific heat of both steam and ice is 0.5 cal/g °C. The heat of fusion is 80cal/g and the heat of vaporization is 540 cal/g. How much heat is necessary for the entire process?
Two resistors A and B are 60,000 and 40,000 (omega sign) respectively and are in series across a constant power supply of 100V. What amount of current is flowing in each of the 3 resistors
An inflated rubber balloon is rubbed with a wool cloth till an excess of a billion electrons is on the balloon. What is the magnitude of the charge on the balloon.
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