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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 electric field midway between two equal but opposite point charges is 856 nc and the distance between the charges
Suppose you have to move a heavy crate of weight 875 N by sliding it along a horizontal concrete floor. What is the magnitude Fp of the minimum force you need to exert on the crate to make it start sliding along the floor
q1. a school yard teeter totter with a total length of 6.0 m and a mass of 36 kg is pivoted at its center. a 19 kg
all spiders have special organs that make them exquisitely sensitive to vibrations. web spiders detect vibrations of
A centrifuge is a device in which a small container of material is rotated at high speed on a circular path. such a device is used in medical laboratories, for instance, to cause the more dense red blood cells to settle through the less dense bloo..
The coefficients of static and kinetic friction between a 67 kg box and a horizontal surface are 0.56 and 0.32, respectively. Illustrate what is the acceleration of the object if a 335 N horizontal force is applied to the box?
A gas is contained in a vertical, frictionless piston-cylinder device. The piston has a mass of 4 kg and a cross-sectional area of 40 cm2. Determine the pressure inside the cylinder
a certain second-order reaction has a rate constant of 1.10times10-3 at 27 and an initial half-life of 226. what is
A crate of mass 10.0 kg is pulled up a rough incline with an initial speed of 1.49 m/s. What is the change in kinetic energy of the crate
The overall magnification of an astronomical telescope is desired to be 26 Ã?. What is the overall length of the telescope when adjusted for use by the relaxed eye
a certain elevator cab has a total run of 190 m and a maximum speed of 305 mmin and it accelerates from rest and then
If you stand on a bathroom scale, the spring inside the scale compresses 0.40mm, what does the scale read at its peak
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