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A 0.43m long wire is located entirely inside a uniform magnetic field B = 0.31T. The wire is perpendicular to the direction of the magnetic field. When a current runs through the wire a magnetic force of F_B = 0.57N acts on the wire. Calculate the size of the current.
find an article on a current event related to macroeconomics. briefly summarize the article and state how a concept in
The other end is attaced to a 3 kg disk moving in uniform circular motion on the table, which stretches the spring by 1 cm. Note: Friction is negligibe. Illustrate what is the work done on the disk by the spring during one full circle?
q1. from t 0 to t 5.00 min a man stands still and from t 5.00 min to t 10.0 min he walks briskly in a straight line
The Hall effect can be used to determine the density of mobile electrons in a conductor. Find the density of mobile electrons in the material
A laser beam of unknown wavelength shines through the two slits and produces a diffraction pattern with dark bands at y1 = 8.9mm, what is the wavelength of the laser light used
A toy top with a spool of diameter 5.0 cm has a moment of inertia of 3.0 X 10^5 kgm2 about its rotation axis. To get the top spinning, its string is pulled with a tension of 0.30 N. How long does it take for the top to complete its first five revolut..
A 900- kg car collides with a 1300- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial speed of the lighter car (in km/h)
A salesperson claims a 1340 kg car has an average acceleration of 3 m/s2 from a standing start to 100 km/h. What average net force is required to do this
Three point charges are on the x-axis. The first is located at -4 meters asn has a charge of -6 coulombs. What is the net force on the charge at the origin
A 250MW laser pulse is focused with a lens to a diameter of 2.5?m. What is the laser beam's electric field amplitude at the focal point
A circular solenoid contains 100 turns of wire and carries a current of 2 amps. Calculate the magnetic flux through one turn of the wire making the solenoid
The density of a pail of water is 10.0g/cm. An object has sunk to the bottom of the pail. What is the density of the object
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