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Two polarizers are oriented at 50 o to one another. Unpolarized light falls on them.
1. What fraction of the light intensity is transmitted?
2. Monochromatic light falls on a slit that is 2.10x10-3 mm wide. If the angle between the first dark fringes on either side of the central maximum is 29.0o(dark fringe to dark fringe), what is the wavelength of the light used?
A spring (k=600N/m) is placed in a vertical position with its lower end supported by a horizontal surface. The upper end is depressed 20 cm, and a 4.0-kg block is placed on top of the depressed spring. The system is released from rest. How far above ..
A football is kicked at ground level with a speed of 15.0 m/s at an angle of 37.0° to the horizontal. How much later does it hit the ground
the volume of a gas is decreased by a constant external pressure of 0.200atm, changing from 2.10 litters to 0.58 litters. during this compression
A small steel ball bearing with a mass of 11g is on a short compressed spring. When aimed vertically and suddenly released, spring sends the bearing to a height of 1.21 m. compute the horizontal distance the ball would travel if the same spring we..
A 48 kg skier skis directly down a frictionless slope angled at 13° to the horizontal. Assume the skier moves in the negative direction of an x axis along the slope. A wind force with component Fx acts on the skier.
A chair of weight 75.0 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 41.0N directed at an angle of 41.0degree below the horizontal and the chair slides along the floor.
A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floor and that its period is 25.5 s. How tall is the tower
you are driving at a speed of 20 m/s. suddenly you see a deer 100m in front of the car and hit the brakes immediately. you are just able to save the deer. (a) calculate the acceleration. (b) how many seconds did you need to stop the car?
What is the result of mixing 80g of ice at -20 degrees Celsius, into a 200g of water at 20 degrees Celsius?
How many moles of the gas are present? If the pressure is now raised to 250 kPa and the temperature is raised to 42.0AoC, how much volume does the gas occupy? Assume no leaks.
The bremsstrahlung x-ray spectrum of both Moand W cut off (have zero intensity) at about 0.035 nm. X rays with this wavelength are produced by the target element when bombarding electrons are promptly stopped in a single collision and give up all ..
A square loop (length along one side = 20 cm) rotates in a constant magnetic field which has a magnitude of 2.0 T. At an instant when the angle between the field and the normal to the plane of the loop is equal to 20? and increasing at the rate of 10..
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