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joja [24]
2 years ago
14

Please help I cannot fail!

Physics
1 answer:
alekssr [168]2 years ago
4 0
Reactants
C8H18
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A student moves a horseshoe magnet by hand across a tabletop to varying distances from an electromagnet, as shown in the diagram
Sloan [31]

The closer together they are the harder it is to hold on to because the magnetic field is stronger as it gets closer.


Answer:

D. The electromagnet's magnetic field is stronger close to it than far from it.​

4 0
1 year ago
Read 2 more answers
A heat engine takes in 840 kJ per cycle from a heat reservoir. Which is not a possible value of the engine's heat output per cyc
zhannawk [14.2K]
We have by the first law of thermodynamics tha energy is preserved, hence we cannot have over 840kJ per cycle. We have by the laws of thermodynamics (the 2nd one in specific) that the entropy of a system cannot increase. We cannot have an output of  840 kJ per cycle from a heat engine because then that would mean that the entropy would stay the same, while any heat engine increases it. Hence, any value \geq 840 kJ is acceptable.
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2 years ago
Which of the following facts about electromagnetic radiation has made it possible for scientists to gather information about Ven
sukhopar [10]

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C. Infrared and radio waves can pass through very dense materials without interference.

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It was my study island question.

6 0
3 years ago
A child is thrown horizontally from a 45m tall tower with a velocity of 7m/s.
lesya692 [45]
The child is thrown for 7 seconds
7 0
2 years ago
3. A 40.0-kg wagon is towed up a hill inclined at 18.5 with respect to the horizontal. The tow rope is parallel to the incline a
inn [45]
Force=tension-fg sin ∅
=140-mg sin 18.5
=140-124.35
=15.62N

a=f/m=15.62/40=0.39
now,
v²=u²+2as
=2×0.39×80
v²=62.4
v=7.8m/s
4 0
2 years ago
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