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A micrometer is connected to the movable mirror of aninterferometer. When the micrometer is tightened down on athin metal foil, the net number of bright fringes that move,compared to the empty micrometer, is 272. What is thethickness of the foil? The wavelenght of light used is589nm.
q1. a violin string that is 45.5 cm long has a fundamental frequency of 490 hz.what is the speed of the waves on this
A radar signal takes 2.7s to go to the moon and return. How far away was the moon at that time
At their closest approach, Venus & Earth are 4.20 x 10^10m apart. The mass of Venus is 4.87 x 10^24 kg, What is the force exerted by Venus on Earth
A block of wood has a mass of 3.70 kg and a density of 632 kg/m3. What mass of lead is needed if the lead is on top of the wood
A 60 (g} tennis ball with an initial speed of 32 {m/s} hits a wall and rebounds with the same speed. The figure shows the force of the wall on the ball throughout the collision.
Jack and Jill are on two different floors of their high rise office building and looking out of their respective windows. What is the height between the two window ledges
questiona hunter wishes to cross a river that is 2.5 km wide and that flows with a speed of 4.8 kmh. the hunter uses a
In a local bar, a customer slides an empty beer mug down the counter for a refill, With what velocity did the mug leave the counter
A toroidal solenoid has 550 turns, cross-sectional area 7.00cm2 , and mean radius 4.90cm, Calcualte the coil's self-inductance
A 5.00 kg block slides down the inclined plane at 20 angle as shown in the diagram below at a constant velocity. Calculate the net work done by both gravity and friction
Ten days after it was launched toward Mars in December 1998, find the potential energy of the earth-spacecraft system
A radio antenna broadcasts a 1.0 MHz radio wave with 30.0 kW of power. What is the electric field amplitude at this distance
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