Physics, 01.07.2019 22:20 gshreya2005
does cell phone use lead to harmful effects from radiation? (2) many americans would love to know the answer, since cell phone use is at an all-time high. (3) cell phone users abound, most are not well informed about the potential hazards associated with cell phones. (4) therefore, cell phones should come labeled with information regarding the dangers of using them.
which transition would be best to use at the beginning of sentence 3?
most importantly
in addition
although
therefore
Answers: 1
Physics, 21.06.2019 23:00
In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?
Answers: 2
Physics, 22.06.2019 07:10
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 11:30
Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon
Answers: 1
Physics, 22.06.2019 15:40
How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9
Answers: 1
does cell phone use lead to harmful effects from radiation? (2) many americans would love to know t...
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