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Q. Two narrow slits 62um apart are illuminated with light of wavelength 480nm . What is the angle of the bright fringe in degrees?
Q. A 210-kg crate is pushed horizontally with a force of 685 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate.
A man drags a 72.0 kg crate across the floor at a constant velocity by pulling on a strap attached to the bottom of the crate. The crate is tilted 26 degrees above the horizontal, and the strap is inclined 68 degrees above the horizontal. The center ..
The electron gun in a TV picture tube accelerates electrons between two parallel plates 1.5cm apart with a 27 kV potential difference between them.
Two cars were firstly at rest and side-by-side between two photogates. The mass of cart 1 was 0.505kg. The spring was activated and two carts moved away from one another, passing through the photogates and producing the readings as shown below. Find ..
A broad beam of light of wavelength 642 nm is incident at 90° on a thin, wedge-shaped film with the index of refraction 1.50. An observer intercepting light transmitted by the film sees 17 bright and 16 dark fringes along the length of the film. B..
What fraction of incident intensity is transmitted by system
Find out the resulting values of the processional rate
A coil is wrapped with 309 turns of wire on the perimeter of a circular frame (of radius 50cm). Each turn has same area, equal to that of the frame.
A helicopter is ascending vertically with a speed of 9 m/s. At a height of 200 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach ground.
A series ac circuit is shown. The inductor has a reactance of 80 Omega and an inductance of 200 mH. A 90- Omega resistor and a capacitor whose reactance is 130 Omega , are also in circuit. The rms current in the circuit is 1.3A. What is the phase ..
A 100 percent efficient electric motor is lifting a 15N weight at 25cm/s. If the motor is connected to a 7V battery, how much current does it draw.
What fraction of the power radiated by the sun is intercepted by the planet Mercury? The radius of Mercury is 2.44 x 106 m, and its distance from the sun at the moment is 5.75 x 1010 m. presume that sun radiates uniformly in all directions.
According to the law of universal gravitation, what will happen to Earth if the Sun were somehow replaced by the black hole of same mass.
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