Physics, 18.02.2021 21:10 jennainglish

Jesse tests three magnets by observing how many paper clips he can attach to the north pole in a single chain. He finds that Magnet A holds six
paper clips, Magnet B holds five paper clips, and Magnet C holds two
paper clips. He warms Magnets A and C in the oven for a few minutes and
repeats his procedure. This time, Magnet A holds only four paper clips,
Magnet B still holds five paper clips, and Magnet C cannot hold any paper
clips. Which statement explains Jesse's observations?
A. Warming a magnet unaligned some of the magnetic domains.
B. The forces produced by a magnet naturally become weaker over
time.
C. Warming a magnet causes the distance of its magnetic force to
decrease.
D. poles of the magnet become reversed when warmed and
cause it to repel the paper clips.

Answers: 2

Show answers

Another question on Physics

Physics, 22.06.2019 09:00

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Answers: 1

Answer

Physics, 22.06.2019 13:30

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.

Answers: 2

Answer

Physics, 22.06.2019 14:00

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system

Answers: 1

Answer

Physics, 22.06.2019 19:00

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.

Answers: 3

Answer

You know the right answer?

Jesse tests three magnets by observing how many paper clips he can attach to the north pole in a si...

Questions