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3 years ago

15

Describe a procedure that would increase the potential energy of two magnets if like poles are used. Explain why the energy of t

he system increases.

1 answer:

zalisa [80]3 years ago

5 0

Answer:

If you apply a force to separate 2 opposite poles, the potential energy of the system increases.

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Please answer this soon

OverLord2011 [107]

Answer:

lava plateau-material fills in valleys

caldera goes-bowl shaped depression

volcanic soil-rich in nutrients

shield volcano-wide summit, gentle slope

cinder cone-made of pieces of lava

Explanation:

3 0

3 years ago

A rock is dropped from a vertical cliff. The rock takes 3.00 s to reach the ground below the cliff. A second rock is thrown vert

Phantasy [73]

Answer:

Velocity v= 12.25 $\frac{m}{s}$

Explanation:

The first rock dropped give the distance Y in meters

$Y_{f}=Y_{o}+v_{o}*t +\frac{1}{2}*a*t^{2}\\ Y_{f}=\frac{1}{2}* 9.8 \frac{m}{s^{2} }* 3^{2} \\Y_{f}=44.1 m$

Now the motion of the second rock the time change so to know the velocity

$Y_{f}= Y_{o} +v_{o}*t +\frac{1}{2}*a *t^{2} \\v_{o}*t= -Y_{f} +\frac{1}{2} *a*t^{2} \\v_{o} =\frac{-44.1 +0.5 * 9.8* s^{2} }{2} \\v_{o}= 12.25 \frac{m}{s}$

7 0

3 years ago

Potential energy due to an objects compression or extension is called _______________________ energy.

cestrela7 [59]

The answer to your question is B.

8 0

4 years ago

The element magnesium has 2 valence electrons. What is the most likely charge on a magnesium ion?

RSB [31]

The charge is 2+

good luck

5 0

3 years ago

Humpback whales sometimes catch fish by swimming rapidly in a circle, blowing a curtain of bubbles that confuses a school of fis

andre [41]

Answer:

1.2 x $10^4$ N

Explanation:

The centripetal force of a body moving in a circle is given by:

Centripetal force = $\frac{Mv^2}{r}$

where M = mass of the object, v = velocity with which the object is moving, and r = radius of the circle.

In this case, M = 25,000 kg, v = 2.0 m/s, and r = 8.2 m. Hence;

Centripetal force generated by the whale = 25,000 x 2^2/8.2

= 12,195.12 N = 1.2 x $10^4$ N to two significant digits.

8 0

3 years ago