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mihalych1998 [28]
3 years ago
14

Which statement best describes a bar magnet?

Physics
1 answer:
ladessa [460]3 years ago
8 0
Answer: option <span>A. It's always on.

Explanation:

Bar magnets are permanent magnets as opposed to electromagnets.

While electromagnets require electric current to be magnetised, and so they can be turned on and turn off, bar magnets are made of magnetic materials and have two poles which cannot be turned on or off and you say that they are always on.The magnetic materials aree the metals iron, cobalt and nickel.
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Charged particles posses a region of influence also called a (an)
Delvig [45]

Answer:(c)

Explanation:

Charge particle posses a region of influence called a filed i.e. Electric field.

It is a region around the charged particle such that other charge particle experiences force due to this field. The nature of force is decided by the charge on the particle creating an electric field.

For a positive charge, electric field lines emerge out of it, and for a negative charge, it acts as radially inwards.

6 0
3 years ago
You perform the Hooke's Law experiment and create a plot of Displacement vs. Force. You add a linear fit and find the following
balandron [24]

Answer: 0.192 N/m

Explanation:

Well, generally when a Hooke's Law experiment is performed the plot is in fact Force vs Displacement, being the Force (in units of Newtons) in the Y-axis and the Displacement (in units of meters) in the X-axis.

In addition, if we add a linear fit the resultant equation will be the Line equation of the form:

Y=mX+b

Where m=\frac{Y_{2}-Y_{1}}{X_{2}-X_{1}} is the slope and b is the point where the line intersects the Y-axis.

So, if the equation is:

Y=0.192X+0.011

The slope of this line is 0.192 N/m which is also the spring constant k.

7 0
3 years ago
Which of these is the best explanation for why 2 negatively charged balloons if put close repel
Scilla [17]
Opposite charges attract; like charges repel :)
5 0
3 years ago
A caregiver's love, affection, and acceptance are considered conditional if they're given only when the child is well-behaved or
murzikaleks [220]

Hello there!  Yes, this is a TRUE statement.

Conditional means something happens on the condition of something else happening. In this case, the something else happening is if the child "child is well-behaved or meets set expectations", and the thing happening because of this is the caregiver's " love, affection, and acceptance". If the child was not any of the things listed, the caregiver would not be the things listed.

I hope this helps, have a great day! :)

4 0
4 years ago
Read 2 more answers
Two particles with charges are initially very far apart (effectively an infinite distance apart). They are then fixed at positio
ddd [48]

Answer:

potential energy increases.

Explanation:

The potential energy between the two charged particles is given by

U = k Q q / r

If they are very far apart then r tends to infinity and the potential energy is zero.

If they come closer then the potential energy between the two charged particles increases.

Thus, the potential energy increases.

3 0
4 years ago
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