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Q. Photons of wavelength 490 nm are incident on a metal. The most energetic electrons ejected from the metal are bent into a circular arc of radius 10.7 cm by a magnetic field with a magnitude of 1.86x10^-5T. What is the work function of the metal?
Q. A circuit contains six 210 lamps and a 14.0 heater connected in parallel. The voltage across the circuit is 120 V. If the circuit has a 12 A fuse, will the fuse melt if all the lamps and the heater are on?
A box of mass 32 kg is at rest on a horizontal frictionless surface. A constant horizontal force then acts on the box, and accelerates it to the right. It is observed that it takes the box 6.5 seconds to travel 48 meters. What is the magnitude of for..
A small turtle moves at a speed of 165 furlongs per fortnight. Find out the speed of the turtle in centimeters per second. Note that 1 furlong = 220 yards and 1 fortnight = 14 days.
The famous horse & cart physics scenario is explained. This scenario is used to describe why many people have a common misconception about what Newton’s 3rd Law says & does not say.
How many revolutions does wheel make throughout the time
What is order of the layers from top to bottom
Computing the probability of reflection and transmission of a particle at walls of a barrier.
Plot the position, velocity, and acceleration of the plane throughout this time interval as a function of time, using initial position of the plane as the origin.
If a disco disk is rotating with a person on it on the outer side, then if he moves inside (towards the center), the angular velocity will change-How will the energy be conserved.
Find the angle with respect to the ground
An object with a net charge of 44 µC is placed in a uniform electric ?eld of 554 N/C, directed vertically. The acceleration of gravity is 9.81 m/s^2. What is the mass of this object if it ?oats in this electric ?eld?
Find out an angle of the velocity vector
A 220 g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.150 s. If the total energy of the system is 3.50 J.
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