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A 1000-turn coil of wire that is 2.3cm in diameter is in a magnetic field that drops from 0.13T to 0T in 12ms. The axis of the coil is parallel to the field. What is the emf of the coil? (ans in V)
q1. what is the minimum distance between two point that will permit them to be resolved at 100km using a terrestrial
A machine part rotates at an angular speed of 0.60 rad/s; itsspeed is then increased to 2.2 rad/s at an angular acceletation of0.70 rad/s2
How many rulings must a 4.22-cm-wide diffraction grating have to resolve the wavelengths 415.544, At what angle are the second order maxima found
An electric field of 8.60 x 107 V/m is desired between two parallel plates, each of area 35.0 cm2 and separated by 2.45 mm of air. What charge must be on each plate.
a block with mass M rests on a frienctionless surface and is connected to a horizontal spring force k. Find the maximum amplitude of oscillation such that the top block will not slip on the bottom block
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 45.9 m/s in a time of 8.93 s. Find the average net force exerted on the car and riders by the magnets
Derive an equation for radius r of circular path that the electrons follow in terms of the magnetic field B, the electrons’ velocity v, charge e, and mass m. You may assume that the electrons move at right angles to the magnetic field.
Helium is used to fill a balloon of diameter 31 cm at 23C and 1.5 atm. The mass of a helium atom is 4.0026 u, the conversion factor from u to kg is 1.66 × 10?27 kg/u, What is the average kinetic energy of each Helium atom
q1. below are birds-eye views of six identical toy cars moving to the right at 2? various forces act on the cars with
A 51.1 kg bungee jumper jumps off a bridge and undergoes simple harmonic motion. what is the spring constant of the bungee cord
question an auto race is held on a circular track. a car completes one lap in a time of 19.3 s with an average
An underwater diver sees the sun 50 degrees above horizontal. How high is the sun above the horizon to a fisherman in a boat above the driver.
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