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An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner's 2.00-T field with his fingers pointing in the direction of the field.
(a) Find the average emf induced in his wedding ring, given its diameter is 2.47 cm and assuming it takes 0.249 s to move it into the field.
(b) If the resistance of the ring is 1.00 m?, how much heat will be transferred to the ring during this time?
A 42.00kg pole vaulter running at 13 m/s vaults over the bar. Her speed when she is above the bar is 1.3 m/s. Avoid air resistance, in addition to any energy absorbed by the pole, and determine her altitude as she crosses the bar.
The weight of passengers on a roller coaster increases by 53% as the car goes through a dip with a 35m radius of curvature
You heat a 507 cm3 sample of a substance from 131 °C to 265 °C, Calculate the coefficient of volume expansion of this substance
Quarterback passed a ball to a receiver while running at 1.5 m/s forward. The ball was released at a height of 2.5 meters with an angle of 45 degrees, Find the final velocity of the ball and its direction
Consider three capacitors, of capacitance 2860 pF, 4570 pF, and 0.0011 ?F. what are the maximum and minimum capacitances that you can form from these
A 100 meter length of steel changes temperature by 30 C during the course of a day. If the coeffcient of thermal expansion of steel is 12 parts per million per C, what is the change in length of the steel
The three resistors are identical with R1 = R2 = R3= 160 ?, and the battery voltage is 50 V. What is the current through resistor R2? R2 and R3 are parallel so these need to be treated with R1 as Requiv = R1+ (R2*R3)/R2+R3 but don't know where to ..
A 3.57 kg block is drawn at constant speed 4.06 m along a horizontal floor by a rope exerting a 7.68 N force at angle of 15 degree above the horizontal. Work out the coefficient of kinetic friction between block and floor.
A 26.0 kg satellite is in a circular orbit with a radius of 1.60×105 m around the planet Glob. Calculate the speed of the satellite. in m/s
A copper bar 2.5 m long has a circular cross section of radius 2 cm. One end is kept at 80 oC and the other end is kept at 0 oC. what is the thermal current in the copper bar
A train is travelling up a 3.2 degree incline at a speed of 3.25 m/s when the last car breaks free and begins to coast. How long does it take for the last car to come to rest.
the speed of light in a certain material is measured to be 2.2*10^8 m/s. what is the index of refraction of this material
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