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The magnetic field in the interstellar space of out galaxy is through to be about 10^-10 T in magnitude.how much energy is stored in this field ina cube 10 light-years on edge? (for scale ,note that the nearest star is 4.2 light-years distant and the radius of our galaxy is about 8x10^4 light-years)
A car is doing a loop-the-loop trick, the loop has a radius of.4 m. What is the minimum initial speed the car must have in order to remain in contact with the circular track at all times
the four particles form a square of edge length a = 4.50 cm and have charges q1 = +25.0 nC, q2 = -50.0 nC, What net electric field do the particles produce at the square's center
Certain stars at the end of their lives are thought to collapse combining their protons and electrons together to form a neutron star. Such a star could be thought of as a giant atomic nucleus.
A 50.0-g bullet is shot straight upward with a muzzle speed of 350 m/s. Find the maximum height the bullet can reach
A 1700kg car drives around a flat 200m -diameter circular track at 24m/s, What is the magnitude of the net force on the car
The ac generator in a series RCL circuit has an rms voltage of 81.3 V. What is the rms current in the circuit
A Dodge car of mass 1103 kg traveling to the right at 22.40 m/s collides head-on with a Ford of mass 1258 kg traveling at the same speed but in the opposite direction. Calculate its final speed the moment after the collision
Pulsed lasers used in science and medicine produce very short bursts of electromagnetic energy. how many wavelengths are found within the laser pulse
Converging lens with plane mirror box somewhere at the left on central axis of converging lens. What is distance between box and lens
A binary system consists of two stars that revolve in a circular orbit about a center of mass midway between them. This means that the masses of two stars are equal. Suppose the orbital speed of each star is 285 km/s and the orbital period of each..
Two 6.0 kg objects head toward each other. Object A moves with a velocity of +7.0 m/s and Object B travels with a velocity of -5.0 m/s. What are their resulting velocities if the collision is perfectly elastic
a 15 kg box is skid down a 6 meter high ramp to pick up speed to do a veritcal loop-the-loop whose radius is 2 meters. What is the speed at the top of the loop-to-loop
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