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A uniform magnetic field points up out of a page for the bottom 3/4 of the page. A rectangular loop of wire in the same plane as the page carries a current of 2.5mA counterclockwise. The rectangle has widths of 10cm and lengths of 85cm and is positioned such that only one of the widths is within the magnetic field. An insulating spring constant of 10 N/M attached to the width at the top of the page is stretched .25m by the magnetic force. The lengths are parallel to the sides of the page. What is the magnetic field?
A car travels a straight road at 130 km/h for 30min then at 50 km/h for 10min . It then reverses and goes at 80 km/h for 20min . What is the average velocity for the entire trip? What is the average speed for the entire trip?
If the rocket gases are expelled at a speed of 2010 m/s, explain how much mass must be expelled?
A 2.30-?F capacitor is fully charged by being connected to a 6.0-V battery, Calculate the maximum current in the inductor, Calculate the frequency of oscillation of the LC circuit
A ball is thrown straight up from the ground with speed v 0 . At the same instant, a second ball is dropped from rest from a height H , Find the time at which the two balls collide
A child and sled with a combined mass of 57.0 kg slide down a frictionless slope. what is the height of the hill
An early model of the atom, proposed by Rutherford after his discovery of the atomic nucleus, had a positive point charge, What is the electric field at the surface of the atom
A 1.5 kg mass attached to ended of a spring moves as a simple harmonic oscillator. obtain what is its period of oscillation
Two charges, q1 = −3.00 mC and q2 = 4.50 mC, are located at −2.00 cm and 3.00 cm on the x axis, respectively. What are the magnitude and direction of the resulting field at (a) x = −3.00 cm? (b) x = 0 cm? (c) x = 5.00 cm?
Two figure skaters, one weighing 625N and the other 775N , push off against each other on very smooth ice. If the heavier skater travels at 1.60m/s , how fast will the lighter one travel?
An airplane flying at a constant speed of 160 m/s pulls out ofa dive in a circular arc. What is the radius of the arc
Two particles of mass m1= 2.6 kg and mass m2 = 4.8 kg that are free to move on a horizontal track are initially held at rest so that they compress a spring, Find the final velocities of the two particles
a beam of protons is accelerated through a potential difference of 0.745kvand then enters a uniform magnetic field
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