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A coil has an inductance of 0.45 H and a resistance of 42 ohms. The coil is connected to a 5.6 V ideal battery. When the current reaches half of its maximum value, find the following.
a. At what rate is its magnetic energy being stored in the conductor?
b. At what rate is the energy being dissipated?
c. What is the total power that the battery supplies? thank you!!
A skier leaves the end of a horizontal ski jump at 22. m/s and falls 3.20 m before landing. how far horizontally does the skier travel in the air before landing
An object that is 27 cm in front of a convex mirror has an image located 13 cm, How far behind the mirror is the image located when the object is 13 cm in front of the mirror
The displacement of a wave traveling in the positive x-direction is y(x, t) = (3.5 cm)cos(1.7x - 129t), where x is in m and t is in s. What is the frequency of this wave
A small space telescope at the end of a tether line of length L moves at linear speed v about a central space station. What will be the linear speed of the telescope
On a dry day, just after washing your hair to remove natural oils and drying it thoroughly, run a plastic comb through it. Small bits of paper will be attracted to the comb. Explain why.
A good model for a radio antenna is a dipole. P1 is on the perpendicular bisector of the dipole, and P2 is along the axis of the dipole in the direction of dipole vector ˆp. P1 and P2 are both a distance 100m from the center of the dipole.
A very long non conducting cylinder of diameter 10.0 cm carries charge distributed uniformly over its surface. Each meter of length carries +5.50 C of charge. A proton is released from rest just outside the surface.
Two small beads having positive charges24qandqare fixed at the opposite ends of a horizontal insulating rod, At what position is the third bead in equilibrium
A tennis ball of mass 57 g travels with velocity m/s toward a wall. After bouncing off the wall, the tennis ball is observed to be traveling with velocity m/s.
A u-tube with constant cross section is partly filled with water. Engine oil of density 0.8g/cm3 is poured into the right arm (without mixing) until the water level rises 2.0cm. The length of the oil column is then.
A flat circular disk of radius R is uniformly charged withtotal charge Q. What is the magnetic fieldstrength at the center of the disk
light of wavelength 6.7x10^-7m travels first through air, and then enters a medium of higher index of refraction. what is the new speed of the light wave
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