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You want to use the idea of electromagnetic induction to make the bulb in your small flashlight glow; it glows when the potential difference across it is 1.5 Volt. You have a bar magnet and a coil with 100 turns, each with area 3.1 ×104 m2. The magnitude of the B field at the front of the bar magnet's north pole is 5.0 × 102 T and reaches 0 T when it is about 4 centimeter away from the pole. Find with what speed should you move the magnet to make the bulb light?
In a double slit experiment, monochromatic light of wavelength 660 nm passes through a pair of slits separated by 3.40 x 10-5 m. find the angle corresponding to the first bright fringe
A 11 kg box must be slid across the floor. what is the minimum force needed to start the box moving from rest
Two narrow slits 62um apart are illuminated with light of wavelength 480nm . What is an angle of the bright fringe in degrees.
According to the law x =a sin2(wt - pi/4), a point moves along the x axis, Find the amplitude & period of oscillations
A constant torque of 28- N•m is applied to a grindstone whose moment of inertia is 0.130 kg•m2. Using energy principles, and avoiding friction, find out the angular speed after the grindstone has made 15 revolutions.
a single mass m1 3.6 kg hangs from a spring in a motionless elevator. the spring constant is k 294.0 nm. now three
A 10.0- shell is traveling horizontally to the right at 25.0 relative to the ground when it explodes into two fragments, Find the magnitude of the velocity of the heavier fragment relative to the ground just after the explosion
An unstable atomic nucleus of mass 1.60 10-26 kg initially at rest disintegrates into three particles. One of the particles, of mass 5.02 10-27 kg, Find the total kinetic energy increase in the process
Coulomb's Law gives us an expression for the electric field caused by a point charge with magnitude . Suppose we have several point charges. The electric field at a location is the vector sum of point charge contributions.
An electron starts from rest 75.5 cm from a fixed point charge with Q = -0.150 µC. How fast will the electron be moving when it is too far away.
A sinusoidal electromagnetic wave having a magnetic field of amplitude 1.05 and a wavelength of 442 is traveling in the direction through empty space. What is the amplitude of the associated electric field
A 1540.0 g mass is ona horizontal surface with μk = 0.31, andis in contact with a massless spring with a force constant of 787.0N/m which is compressed. When the spring is released, it does 2.52J of work on the mass while returning to its equilibr..
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