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A recently developed method to study brain function is to produce arapidly changing magnetic field within the brain. When thistechnique, known as TMS, is applied to the prefrontal cortex, forexample, it can reduce a person's ability to conjugate verbs, though other though processes are unaffected. The rapidly varyingmagnetic field is produced with a circular coil of 21 turns and aradius of 6.0 cm placed directly on the head. The current in thisloop increases at the rate of 1.2x107A/s (by discharginga capacitor. (a) At what rate does the magnetic field at the centerof the coil increase? (b) Suppose a second coil with half the areaof the first coil is used instead. Would your answer to part (a)increase, decrease, or stay the same? By what factor?
Only two horizontal forces act on a 6.3 kg body. One force is 6.0 N, acting due east, and the other is 8.3 N, What is the magnitude of the body's acceleration?
On a ski weekend in Colorado, Bob, whose mass is 75.0kg, skis downa hill that is inclined at the angle of 15.0 degrees to the horizontal, How much work is done by gravity on Bob as he goes down the hill
A 50,000 kg locomotive is traveling at 50.0m/s when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop
How far does the car go before it stops. A car traveling at 50m/s runs out of gas while traveling up a 30 degree slope. how long will it travel before it rolls back down.
The plate on the back of a certain computer scanner says that the unit draws 0.44A of current from a 120V , 60Hz line. Find the root-mean-square current
A perfectly insulated system has work done by it at a rate of 13 W. At what rate is the internal energy of the system changing?
A star has a mass of 1.87 x 1030 kg and is moving in a circular orbit about the center of its galaxy. The radius of the orbit is 3.5 x 104 light-years, Determine the tangential speed of the star
An electron with a speed of 3.6105m/s enters a uniform magnetic field of magnitude0.057T at an angle of 35° to the magnetic field lines. The electron will follow a helical path.
a boxer receives a horizontal blow to the head that topples him over. the force of magnitude 1.35 x 103 n is applied
X-rays having an energy of 300 keV undergo Compton scattering from a target. The scattered rays are detected at 37.0° relative to the incident rays. find the energy of the recoiling electron
Initially 1.300 mol of an ideal gas in a container occupies a volume of 2.50 l at a pressure of 3.30 atm with an internal energy U1 = 592.8 J. Find the heat added during this process
An air puck of mass 0.20 kg is tied to a string and allowed to revolve in a circle of radius 0.9 m on a frictionless horizontal table. What is the speed of the puck
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