PHYSICS MIDDLE SCHOOL

Which will be attracted to (or repelled by) a magnet ? Check all that apply.

A.) An Iron horseshoe
B.) An aluminum rod
C.) A copper wire carrying current
D.) A positively charged glass rod
E.) A copper wire not carrying any current
F.) Another magnet

Answers

Answer 1

Answer:

Answer:

A.) An Iron horseshoe

C.) A copper wire carrying current

F.) Another magnet

Explanation:

As we know that two magnets and two different magnetic materials will attract or repel each other

This is due to interaction of two materials due to which their magnetic field interacts and apply force on each other

Here we know that

magnetic field due to current carrying wire is given as

$B = (mu_o i)/(2\pi r)$

so here the magnetic fields will interact when a current carrying wire is placed near the magnet, or another magnet is placed near the magnet or any magnetic material like iron horse shoe is near it

Answer 2

Answer: I believe it’s A C F

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sound is a form of energy in that it consists fluctuations of air pressure . The speed of the fluctuations is measured in cycles per second or Hertz (HZ)

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Answers

Translational motion is the motion by which a body shifts from one point in space to another. One example of translational motion is the the motion of a bullet fired from a gun. An object has a rectilinear motion when it moves along a straight line. Hope this helps! :)

Answer:

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A basketball has been left out in the cold. The next day you find that it has become soft. What do you do to get it back to shape and why?a) Leave it alone to warm up
b) Pump it up a little
c) Get a new basketball

Answers

All three answers would adequately solve your "flat basketball" problem, but the answer your teacher is probably looking for is a). When the air inside the basketball cooled off, the particles came closer together, causing the ball to deflate. If the air inside the ball was warmed back up, the particles would spread out more (the air would expand) and the ball would inflate again.
Hope that helps!!

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A small child has a wagon with a mass of 10 kilograms. The child pulls on the wagon with a force of 2 Newtons. What is the acceleration of the wagon?

Answers

We know that Force (F) is equal to mass (m) times the acceleration (a)
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Here:
m=10 and F=2
by solving for a we get a = 0.2 meters per second squared.

the answer is 0.2 meter per second squared.

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Answers

An object following any type of curved motion will necessarily be changing its direction as it moves. This change in direction constitutes a change in velocity, since velocity is a vector, and, thus, velocity has both a size, the speed, and a direction. So, if an object travels in a curved path, it changes velocity, and, thus, accelerates. This acceleration must be tied to a force. Newton's laws of motion explain this. Therefore, whenever an object travels in a curved path, there must be an unbalanced force acting upon it.

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