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A 1.80 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 14.9 m/s. The vertical component of Earth's magnetic field in this region is 40.0 µT directed downward. Calculate the induced emf between the ends of the wire and determine which end is positive.
Calculate the commutation relation for the inner product of position and momentum and angular momentum. In other words, what is: [p\cdotr, L] (vector p dotted with vector r, vector L)
A uniform disk is constrained to rotate about an axis passing through its center and perpendicular to the plane of the disk. find the average angular acceleration that the disk experiences
Big Ben, the Parliament tower clock in London, has an hour hand 2.70 m long with a mass of 300 kg, Calculate the total rotational kinetic energy of the two hands about the axis of rotation
A destroyer sends a sonar pulse out to detect a submarine directly below the ship in the ocean. If the speed of sound in what is 1517 m/s and it takes 64.13 s for the return pulse to hit the hydrophone on the bottom of the ship, how deep is the su..
A 0.3kg mas is attached to a spring with a spring constant of 120n/m and resys on a frictionless horizontal surface. It is compressed 17cm and released. Find forces and inital acceleration
In a defribrillator, which delivers the electric energy stored in the 175x10^-6F capacitor to restore the heart's regular beating, find the energy stored in the charged-up defribrillator
A 150 g copper bowl contains 220 g of water, both at 20.0ºC. A very hot 300g copper cylinder is dropped into the water, What was the original temperature of the cylinder
An electric motor is rated to have a maximum power output of 0.68 hp. how fast (i.e., at what speed) can it lift the crate
In a butcher shop, a horizontal steel bar of mass 4.57 kg and length 1.27 m is supported by two vertical wires attached to its ends. What is the tension in the right wire
A 2.25×10^4 elevator is to be accelerated upward by connecting it to a counterweight using a light (but strong!) cable passing over a solid uniform disk-shaped pulley. There is no appreciable friction at the axle of the pulley, other than its mass..
Two 1.90-cm-diameter disks spaced 2.10mmapart form a parallel-plate capacitor. The electric field between the disks is 5.10×105V/m, What was the electron's speed as it left the negative plate
after completing the calculations below sketch the ph curve for the titration of 25.0 ml of 0.200m solution of a weak
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