Conduction
This is the way heat transfers through . When the particles near the heat source heat up, they get
more and start to more. They with the other particles and
pass energy to them. Then these paticles start to move more and with the other particles. This
process continues until all the particles have the same energy and the whole objecvt is the same .
Convection
This is the way heat transfers through and . The particles are near the heat source
heat up and start to move more. They more from the other particles, so this part becomes less
. Because it is less dense, it . Cold particles move to fill the
that is created. Then they heat up and , cool down and , heat up and
cool down and . This is calleda convection.
Radiation
This is how heat trasnfers without physical . It is how the ’s energy
reaches us on Earth or how we feel the heat of a without touching it for example
Answers: 2
Physics, 21.06.2019 21:50
It is may 5 and you are somewhere in the northern hemisphere. if you determine that the noon sun is 51 degrees above your southern horizon, what is the latitude of your location
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Search coils and credit cards. one practical way to measure magnetic field strength uses a small, closely wound coil called a search coil. the coil is initially held with its plane perpendicular to a magnetic field. the coil is then either quickly rotated a quarter-turn about a diameter or quickly pulled out of the field. (a) derive the equation relating the total charge q that flows through a search coil to the magnetic-field magnitude b. the search coil has n turns, each with area a, and the flux through the coil is decreased from its initial maximum value to zero in a time ∆t. the resistance of the coil is r, and the total charge is q = i∆t, where i is the average current induced by the change in flux. (b) in a credit card reader, the magnetic strip on the back of a credit card is rapidly “swiped” past a coil within the reader. explain, using the same ideas that underlie the operation of a search coil, how the reader can decode the information stored in the pattern of magnetization on the strip. (c) is it necessary that the credit card be “swiped” through the reader at exactly the right speed? why or why not?
Answers: 2
Physics, 22.06.2019 12:00
Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.
Answers: 1
Conduction
This is the way heat transfers through . When the particles near the heat source heat u...
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