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The circuit in figure 32-34 consists of switch S, a 20.0MΩ resistor, a 12.0V ideal battery, and an air filled capacitor. The capacitor has parallel circular plates of radius 5.00 cm, separated with 3.00 mm. At time t =0, switch S is closed to begin charging the capacitor. The electric field among the plates is uniform. At t =250 μs, what is the magnitude of the magnetic field within the capacitor, at radial distance 3.00 cm?
When armature is rotated by half revolution, its magnetic polarity changes. Why is it necessary to change the polarity of armature magnet? Explain how does the change take place
a 0.135 kg projectile is fired with a velocity of 711 ms at a 1.82 kg wooden block that rests on a frictionless table.
The force diagram shown describes the forces acting on the back while bending at the waist in static equilibrium the trunk makes a 60 degree angle with the vertical. hat is the torque equation about point A
Another student bumps the field-producing device so that the electric field is now (23.7 N/C)i + (15.5 N/C)k, What is the new electric flux through the hoop
An ideal gas is at a temperature of 30 degrees C, find the number of particles per unit volume of the gas
A typical power transmission line carries a current of 1000 A about 30.0 meters above the ground. The magnetic field generated at groundlevel by the current is a matter of concern to those who live nearby.
A certain nuclear power plant is capable of producing 9.0×108 W of electric power. How much mass is converted per hour if the efficiency of the plant is 28 percent
carpet is to be laid in a room that is in the form of acircular sector with a central angle of 105o. if thelength
A magnetic field increases from 0 to 0.30T in 1.5 seconds. How many turns of wire are needed in a circular coil 15cm in diameter to produce an induced emf of 0.80 volt?
q1. a 1.86- sound wave travels through the pregnant womans abdomen and is reflected from the fetal heart wall of her
An object is placed 12.2 cm to the left of a diverging lens of focal length -5.10 cm. Find the distance d that places the final image at infinity
a proton is released from rest inside a region of constant uniform electric field e1 pointing due north. 22.3 seconds
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