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Consider a simple spherical wave, with omega/k=cE(r, theta, phi, t)=((A sin theta)/r)(cos(kr - omega t) -(1/kr)sin(kr - omega t)) phi-hatShow that E obeys the Ampere's law.
A straight rod consists of a 2cm long piece of aluminum attached to a 3cm long piece of steel. calculate the change in length of the aluminum rod
A hot-air balloon has just lifted off and is rising at the constant rate of 2.2 m/s. how high is she when the camera reaches her
A long solenoid has 140 turns/cm and carries current i. An electron moves within the solenoid in a circle of radius 2.60 cm perpendicular to the solenoid axis. Find the current i in the solenoid
a daredevil is shot out of a cannon at an angle of 53 degrees with respect to the horizontal. the daredevil has an
The density of water in Earth's hydrosphere and the density of rocks in the crust are both lower than the average density of the planet as a whole
A wire has a resistance of 22.9 ?. It is melted down, and from the same volume of metal a new wire is made that is three times longer than the original wire. What is the resistance of the new wire
A person desires to reach a point that is 3.40 km from her present location and in a direction that is 350 north of east. However, she must travel along streets that are oriented either north-south or east-west. What is the minimum distance she mi..
q1. a person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by
On a frictionless table, a glob of clay of mass 0.24 kg strikes a bar of mass 1.34kg perpendicularly at a point 0.38m from the center of the bar and sticks to it. If the bar is 1.14 m long and the clay is moving.
A 12.0-? resistor, a 12.0-µF capacitor, and a 17.0-mH inductor are connected in series with a 150-V generator, What is the maximum value of the rms current
Mercury has a mass MP = 3.18 x 1023 kg, an orbital period T = 88.0 days, and an orbital radius r = 5.79 x 10^10 m. Find the angular speed of Mercury about the Sun
A speed skater moving across frictionless ice at 8.80 hits a 4.20-m-wide patch of rough ice. What is her acceleration on the rough ice
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