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Two narrow slits 3 mm apart are illuminated with light from a sodium lamp (lamda = 589 nm), and an interference pattern appears on a screen 5 meter from the slits.
1) You place an ultra-thin plate of glass with index of refraction n = 1.5 and thickness .160 mm over both of the slits. What happens central maximum?
2) If you were to place another piece of glass, with index of refraction 1.5, over one of the slits. It has the minimum thickness to create dark destructive interference at the formerly bright central maximum. What is the thickness of this glass?
a 500 g ball swings in a vertical circle at the end of a 1.5-m-long string. When the ball is at the bottom of the circle the tension in the string is 15 N. What is the speed of the ball at that point?
4.0kg of water at 30 C is mixed with 4.0 kg of water at 47 C in a well-insulated container. Estimate the net change in entropy of the system.
An object executing simple harmonic motion has a maximum speed of 4.9 m/s and a maximum acceleration of 0.70 m/s2. Find the amplitude of this motion
A parallel-plate capacitor is charged to an electric potential of 285 V by moving 3.20×10^16 electrons from one plate to the other
The output voltage of an AC generator is given by ?v = (200 V) sin (70?t). The generator is connected across a 19.0-? resistor. Find the power delivered to the resistor
An aeroplane has wings with a surface area of 34 m2. The shape of the wings are such that air moving over the top of them travels 20% faster than the velocity of the air under the wing, what is the take-off speed of the plane
An astronaut on earth can throw a ball straight up to a height of 13m. How high can he throw the ball on Mars
A soccer ball with mass 0.285kg is initially at rest and is kicked at an angle of 22.8 (degrees) with respect to the horizontal. What is the impulse received by the soccer ball during the kick
A wheel and axle has its matter distributed like a solid disk. (I=1/mR^2) It has a radius of 0.60m and a mass of 0.50kg, how many turns does the wheel make in 2.0sec
Assume that a certain location on the Earth reflects 31.0% of the incident sunlight from its clouds and surface. what is the radiation pressure (Prad) on the Earth at this location
An Emergency Vehicle Siren is designed to emit an 8000 Hz sound. You hear a 9143 Hz tone as it approaches you at 40.0m/s and a 7273 Hz tone as it recedes at 32 m/s. What is the temperature of the air
A high-speed lifting mechanism supports a 780-kg object with a steel cable that is 33.0 m long and 4.00 cm2 in cross-sectional area. Determine the elongation of the cable
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