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State the main reason as to why the magnetic field strength of a magnet is greatest at the poles.
The star Betelguese has a radius and surface temperature of about 10^8 miles and 3000K. The sun has a radius and surface temp of about 5x10^5 miles and 6000k. Find the ratio of the power radiated by the sun and Betlguese Psun/Pbet.
A ship on the surface of the ocean receives a sonar echo back from an underwater object. What is the depth of the object in the sea
Superman must stop a 100km/h train in 150 m to keep it fromhitting a stalled car on the tracks. If the train's mass is3.6 x 10(to the 5th) kg, how much force must he exert
A volleyball is spiked so that it has an initial velocity of 16.5 m/s directed downward at an angle of 53.1 ° below the horizontal. determine the horizontal component of the ball's velocity
Spheres A and B are touched together and then separated. Sphere C is then touched to sphere A and separated from it. Lastly, sphere C is touched to sphere B and separated from it. Explain how much charge ends up on sphere C?
An sub with a mass of 1800 kg is traveling eastbound at 17 m/swhile a compact car with mass of 900 kg is traveling westbound witha speed of 15 m/s the cars collide head-on becoming entangled.
An electron is released from rest at a distance of 0.400 m from a large insulating sheet of charge that has uniform surface charge density 3.80×10-12 C/m. How much work is done on the electron by the electric field
Imagine that in a certain proton accelerator, roughly 1011 protons at a time go around a ring having a radius of 4.0 km, What is the current flowing in the ring, in amperes
q1. throughout liftoff a hot air balloon accelerates upward at a rate of 2.7 ms2. the balloonist drops an object over
A subway train starts from rest at a station and accelerates at a rate of 1.69m/s2 for 14.2s. What is the total distance traveled
A current I flows down a wire of radius a. If it is uniformly distributed over the surface, what is the surface current density K
a magnetic field is present in space and is time dependent. it is given bybt sint i 7-t j 23t ka wire in the shape
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