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Question: 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. His wedding ring has a diameter of 2.2 cm and it takes .475 s to move it into the field.
(a) What is the average current induced in the ring in A if its resistance is 0.0100 ohms?
(b) What is average power dissipated in mW?
(c) What magnetic field is induced at the center of the ring in T?
Tension is maintained in a string by attaching one end to a wall and by hanging a 2.06 kg object from the other end of the string after it passes over a pulley that is 2.12 m from the wall. What is the fundamental frequency of the string
The coefficient of static friction
a proton in the upper atmosphere moves at 8.8times105 ms perpendicular to earths magnetic field which at that point
A car changes in motion from 0mph to 60mph in 3.5 seconds. If it starts from a stop and travels a distance of a quarter mile, What is the car's speed
A 4.25-kg watermelon is dropped fromrest from the roof of a 20.5-m-tallbuilding and feels no appreciable air resistance.
A vertical straight wire carrying an upward 24-A current exerts an attractive force per unit length of 8.8 *10-4 N/m on a second parallel wire 7.0cm away. What current (magnitude and direction) flows in the second wire?
A person notices a mild shock if the current along a path through the thumb and index finger exceeds 80 μA. Find the maximum allowable potential difference without shock across the thumb and index finger for a wet-skin resistance of 1000 Ω.
A spherical balloon is made from a material whose massis 3.00 kg. The thickness of thematerial is negligible compared to the 1.60 m radius of the balloon. Find the absolute pressure of the helium gas
The system is released from rest with the rod horizontal. If the animals can manage to hold on, illustrate what are their speeds as the rod swings through a vertical position?
The concrete wall of a building is 0.0972 meter thick. The temperature inside the building is 17.8 °C, while the temperature outside is 0.0 °C. Determine what is the emissivity of the wall
Three identical masses of 340 kg each are placed on the x axis. One mass is at X1 = -120cm, What is the direction of the net gravitational force on the mass at the origin due to the other two masses
A flight attendant pulls her 63N flight bag a distance of 308m along a level airport floor at a constant velocity. The force she exerts is 45N at an angle of 57° above horizontal. Find the work she does on flight bag.
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