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1. What is the maximum uncertainty in the measurement of the oscillation frequency in a Josephson junction if the voltage standard of 1 mV is to be maintained within 1 part in 1010? Assume a reference frequency of 483.6 GHz.
2. Find the minimum acceleration needed for a maglev train to reach a speed of 430 km/h in 3.0 km, one tenth of the length of the 30-km track in Shanghai. Express your answer as a fraction of g, the free-fall acceleration near Earth. Would this acceleration be noticeable?
A ball is thrown upward,. At 5.00 m above its launch point, the ball's speed is one-third its launch speed. What maximum height above the launch point does the ball attain
Find the x-coordinate of the center of mass of the system of three chocolate blocks. Find the y-coordinate of the center of mass of the system of three chocolate blocks.
a proton accelerates from rest in a uniform electric field of 620 nc. at some later time its speed is 1.4e6 ms.a find
In a certain compound microscope, the object is 9.0 mm from the objective. What overall magnification is produced
question1a solid cylinder of mass 8.9 kg and radius 32 cm is yoked to a spring as shown. to be precise axle of the
The drum of a photocopying machine has a length of 42 cm and a diameter 12 cm. The electric field now above the drum's surface is 2.3x105N/C. What is the total charge on the drum?
Each of the protons in a particle beam has a kinetic energy of 3.05 x 10-15 Joule. Find what are the magnitude and direction of electric field that will stop these protons in a distance of 1.40 meter
A certain battery has an emf of 9.1V and an internal resistance of 1.5 ohms. If the battery is connected to resistors of 8.0 ohms and 24.0 ohms in parallel, what is the current through the battery?
A thin bi-convex lens is to focus the image of an object onto a screen so that the image is life sized. What is the distance d from image to screen
A fire hose ejects a stream of water at an angle of 38.3 ° above the horizontal. The water leaves the nozzle with a speed of 29.5 m/s. Assuming that the water behaves like a projectile, how far from a building should the fire hose be located to hit t..
two flat 4.0 cm times 4.0 cm electrodes carrying equal but opposite charges are spaced 2.0 mm apart with their
A series RCL circuit includes a resistance of 271 ?, an inductive reactance of 661 ?, and a capacitive reactance of 425 ?. What is the voltage of the generator
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