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A magnetic field is perpendicular to the plane of a single-turncircular coil. The magnitude of the field is changing, so that anemf of 0.65 V and a current of3.1 A are induced in the coil. The wire isthe re-formed into a single-turn square coil, which is used in thesame magnetic field (again perpendicular to the plane of the coiland with a magnitude changing at the same rate). What emf andcurrent are induced in the square coil?emf
current
What formula is needed to solve for each?
A 50kg pullvolter running at 10 m/s vults over the bar. Her speed when she is above the bar is 1 m/s. estimate her altitude as she crosses the bar
The total force on a one foot wide section of the inclined portion of the wall and the location and line of action of the resultant force.
A rifle with a barrel length of 58 fires an 11 bullet with a horizontal speed of 370. The bullet strikes a block of wood and penetrates to a depth of 15.
When lightning strikes a vehicle with a person inside, how long should the person stay inside the vehicle
A 500-turn solenoid is 23 cm long, 1.5 cm in diameter, and carries 65 mA. How much magnetic energy does it contain
A 290 g piece of iron at 180 oC is placed in a 95 g aluminum calorimeter cup containing 250 g of glycerin at 10 oC. What is the specific heat of glycerin
A 2.31?102g piece of copper at a temperature of 401.K and a 1.07?102g piece of aluminum at a temperature of 2.17?102K, What is the equilibrium temperature of the mixture
people often use the term energy crisis implying that we are running out of energy. how can this be if energy is
When a ceiling fan rotating with an angular speed of 5.6 rad/s is turned off, What is the moment of inertia of the fan
If camera is focused for a distance of 20m, should the lens be moved closer to the film or farther from the film to focus on an object 5 m away. Explain why.
A large water tank springs a leak in its side whcih is 10 m above the ground. How far above the leak is the water level in the tank
A uniform thin disk (I=1/3ML^2) of length L and mass M is pivoted at one end. It is held horizontal and released. Find the angular acceleration of the stick immeidately after it is released
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