Physics Magnetism,Magnetic Effects Of Current Level: University
2 identical wires have a weight per unit length of 1.0 x 10^-4 N/m. The wire are strug parallel to each other one directly above the other with a distance of separation of 0.10m. What current must be present in the 2 wires in order for the upper wire to float above the lower wire. Assume that the wires carry the same current in opposite directions.
Physics Magnetism,Magnetic Effects Of Current Level: University
A long straight wire carries a current of 5.00 A. At one instant a proton 4.00 mm from the wire travels at 1.50 x 10^3 m/s parallel to the wire and in the same direction as the current. Find the magnitude and direction of the magnetic force on the proton.
Physics Magnetism,Magnetic Effects Of Current Level: University
A porton moves in a circular orbit of radius 14 cm in a uniform magnetic field of 0.35 T directed perpendicular to the velocity of the proton. Find the orbit ( linear) speed of the proton.
Physics Magnetism,Magnetic Effects Of Current Level: University
A porton with a speed of 1.0 x 10^5m/s through the earths magnetic field which has a value of 55uT at a particular loction. When the proton moves east the magnetic force acting on it is maximum. When it moves northward it experiences no magnetic force. Find the magnitude and direction of the maximum magnetic force.
Physics Magnetism,Magnetic Effects Of Current Level: University
Earth MagnetismTwo current carrying wires lie in a horizontal plane as shown to the right ( you are looking down on them from above). The current in wire 1 is 3.75 A the current in wire 2 is adjusted to make the net magnetic field (5.50 x 10^-5 T). The combined fields point opposite to the earth's magnetic field which points vertically down. Find the magnitude and direction of the current in wire 2. Also find the net field ( magnitude and direction ) at the midpoint between the wires.
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Physics Magnetism,Magnetic Effects Of Current Level: University
A rectangular current loop carrent of 8.0 A inthe direction.
Shown: A very long wire is parallel to the sides of the rectangle and carries a current I. The rectangle loop has a length of 0.80 m and its sides are 0.10 and 0.70 m from the long wire. What must be the value of the current I in the long wire to produce an attractive net force of 2.3 x 10^6 N on the rectangle? Show on the diagram below the direction of the current in in the long wire.
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Physics Relativity Level: University
Relativistic MomentumAn electron has a total energy of 6.5 MeV. What is its momentum ( in MeV/c)?
Physics Relativity Level: University
Mass Energy RelationshipAn object of mass 0.12 kg is moving at 1.80 x 10^8 m/s. What is its kinetic energy in joules?
Physics Relativity Level: University
Mass Energy RelationshipTwo lumps of putty are moving in opposite directions each one having a speed of 30.0 m/s . They collide and stick together. After the collision the combined lumps are at rest. If the mass of each lump was 1.00 kg before the collision and no energy is lost to the environment What is the change in mass of the system due to the collision?
Physics Relativity Level: University
Relativistic MomentumAn electron has momentum of magnitude 2.4 x 10^-22 kg*m/s. What is the electrons speed?
Physics Relativity Level: University
Relative VelocityParticle A is moving with a constant velocityVAE = + 0.90 c relative to an Earth observer. Particle B moves in the opposite direction with a constant velocity VBE+ -0.90c relative to the same Earth obsever. What is the velocity of particle B as seen by particle A?
Physics Relativity Level: University
Relative MotionA rectangilar plate of glass measured at rest has sides 30.0 cm and 60.0 cm (a) As measured in a reference frame moving parallel to the 60.0 cm edge at speed 0.25c with respect to the glass what are the lengths of the sides? (b) How fast would a reference frame have to move in the same direction so that the plate of glass viewed in that frame is square?
Physics Relativity Level: University
Relative MotionA laboratory measurement of the coordinates of the ends of a moving meterstick taken at the same time in the laboratory, gives the result that one end of the stick is o.992 m due north of the other end. If the stick is moving due north what is the speed with respect to the lab?
Physics Relativity Level: University
LightA spaceship is traveling away from Earth at 0.87c. The astronauts report home by radio every 12 h ( by their own clocks). At what interval are the reports sent to Earth according to Earth clocks?
Physics Relativity Level: University
LightAn astronaut wears a new Rilex watch on a journey at a speed of 2.0 X 10^8 m/s with respect to Earth. According to mission control in Houston the trip lasts 12.0 h. How long is the trip as measured on the Rolex?
