Astrip of copper 150 μm thickand 4.5 mm wide is placed in a uniform magnetic field b (vector) ofmagnitude 0.65 t, with b (vector) perpendicular to the strip. acurrent i=23 a is then sent through the strip such that ahall potential difference v appears across the widthof the strip. calculate v. (the number of charge carriersper unit volume for copper is 8.47 x 1028electrons/m3.)

i used v = bi / nle so v = (.65t*23a)/8.47e28*1.6e-19*150e-5m) = 7.35e-6v which is what the2nd response in the other thread used. and, according to thistextbook, it says "l" is the thickness of the strip however in theother thread, in the first response, they used v = e d where e =1.103e-9 and d = 4.5e-3 therefore the answer is 4.96 e-12

which is correct?

Tungsten-filament lightbulb emits light based on the temperature of the filament. which phenomenon does this demonstrate?

Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called