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Select True or False for each of the following statements regarding magnetism, and the earth's magnetic field "B."
1. The earth's B lines are parallel to the earth's surface at allpoints.For a bar magnet, the B - lines exit through the N pole and returnthrough the S pole .2. The magnitude of earth's B is about 1 Tesla.3. B does work on a charge only when the charge has a velocitycomponent parallel to B.4. The vector B acts only on charges at rest.5. B does work on a charge only when the charge has a velocitycomponent perpendicular to B.6. Like magnetic poles attract.
The moon orbits the earth at a distance of 3.85 x 108 m. Assume that this distance is between the centers of the earth andthe moon and that the mass of the earth is 5.98 x 1024kg. Find the period for the moon's motion around the earth.
A fixed inductance of 0.18 mH is used in series with a variable capacitor in the tuning section of a radio. What capacitance will tune the circuit to the signal from WSB which is broad casting at a frequency of 750 KHz?
The magnetic field is always perpendicular to the velocity of the charge. Magnetic fields deflect moving charges. Magnetic fields are created by moving charges.
The distance from knee to the hip is 55 cm. The weight of that partis 9 kg. The distance from knee to the foot is 45 cm. The weight ofthat part is 5 kg. How far from the hip in cm is the gravity pointin the leg if we know that it is somewhere arou..
A uniform steel beam of length 5.00m has a weight of4.50*103 N. One end of the beam is bolted to avertical wall. The beam is held in a horizontal position by acable attached between the other end of the beam and a point on the wall.
A wheel is spinning at 29 rad/s. Over aperiod of 15 s it is spinned up to343 rad/s. Determine its angular acceleration while it wasspinning up.
Cloverleaf exits are approximately circular. A 1597 kg automobile is traveling 56 mph while taking a cloverleaf exit that has aradius of 40.5 m. Calculate the centripetal acceleration of the car and the centripetal force onthe car. Remember that 1..
A 5.5 kgdog stands on a 19 kg flatboatat distance D = 6.1 m from the shore. It walks 2.0 m along the boattoward shore and then stops. Assuming no friction between the boatand the water, find how far the dog is then from the shore.
A current of 18.0 mA ismaintained in a single circular loop of 2.50 m circumference. A magnetic field of 0.810 T is directed parallel to the plane of the loop.
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that anemf of 0.69 V and a current of2.8 A are induced in the coil.
The long straight wire carries a current of 3.0 A. A particle has a charge of +6.5x10-6 C and is moving parallel to the wire at a distance of 0.050 m. The speed of the particle is 280 m/s. Determine the magnitude and direction of the magnetic force o..
compute the cost per day of operating a lamp that draws a current of 2.20 a from a 110 v line. assume the cost of
As two trains move along a track, their conductors suddenlynotice that they are headed toward each other. The figure givestheir velocities v as a function oftime t as the conductors slow the trains.
two stationary positive point charges charge 1 of magnitude 3.20nc and charge 2 of magnitude 1.50nc are separated by a
A circular disk of mass 10.0 kg and radius 0.500 m rotates at 30.0 revolutions per second on a vertical axle, What is the final angular velocity of the combination of disks
A bicycle tire rolls down a 25 m hill and crashes into a car door. how fast did the tire collide with the door
how does the acceleration curve compare to the force curve? what differences are there? from looking at a graph what
An electron moves in a circular path perpendicular to a constant magnetic field with a magnitude of 2.00 mT. The angular momentum of the electron about center of the circle is 5.50 multiplied by 10-25 J·s.
a father racing his son has half the kinetic energy of the son who has half the mass of the father. the father speeds
A billiard ball moving at 6.00 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 4.94 m/s at an angle of 34.5° with respect to the original line of motion, find the struck ball's velocity after the collisi..
How far must the spring be compressed. A small remote-control car with a mass of 1.62 moves at a constant speed of = 12.0 in a vertical circle inside a hollow metal cylinder that has a radius of 5.
Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car
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