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A wire has a length of 8.80 10-2 m and is used to make a circular coil of one turn. There is a current of 4.90 A in the wire. In the presence of a 3.90 T magnetic field, what is the maximum torque that this coil can experience?
The pilot of an aircraft wishes to fly due west in a 30.8 km/h wind blowing toward the south. In what direction should the aircraft head
Suppose V max = 120 V for an alternating current power source. What is the rms voltage for the source
A uniformly charged sphere has a potential of 490 V on it's surface. At a radial distance of .24m from this surface the potential is 120 V. What is the radius of the sphere
A hill that has a 15.8 % grade is one that rises 15.8 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal
A source emits sound uniformly in all directions. A radial line is drawn from this source. On this line, determine the radial positions of two points, 0.786m apart, such that intensity level at one point is 1.72 dB greater than that at the other.
A ball dropped from a height of 4.00 m makes an elastic collision with the ground. Assuming no mechanical energy is lost due to air resistance, a) show that the ensuing motion is periodic, b) find the period of the motion.
A sinusoidal wave traveling on a string is moving in the positive x-direction. The wave has a wavelength of 3 m, a frequency of 70 Hz, What is the wave function for this wave
A silver wire has a cross sectional area A = 2.0 mm2. A total of 9.4 × 1018 electrons pass through the wire in 3.0 s. What is the drift velocity of these electrons
A 270 m wide river flows due east at a uniform speed of 2.30 m/s. A boat with the speed of 8.4 m/s relative to water leaves the south bank pointed in a direction 38o west of north. What is (a) magnitude and (b) direction of the boat's velocity rel..
A large arm model was constructed with a free arm which weights 1 kg, an additional weight of 1 kg is supported by the arm at a distance of 12 cm from the pivot. What is the total torque of the resistance
Three point charges are arranged along the x axis. Charge q1=-4 nC is located at x=0.240m and charge q2=2.10 nC is at x=-0.350m, What is the direction of the net force on q3
a closed organ pipe resonates with frequency 6hz and an open organ pipe resonates with frequency 12hz. if the two organ
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