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4 years ago

Explain how energy allows a paper clip to be attracted to a magnet

2 answers:

6 0

I really don’t know maybe energy from the poles just attaches and the soil comes and energy lifts the matter of soil and the magnet follows and lifts and goes up to the soil and the poles attach the magnet to the soil and the energy lifts the magnet and the soil follows and it is attracted to the magnet

podryga [215]4 years ago

4 0

The North Pole of the bar magnet lines up magnetic domains in the paper clip, in such a fashion that the domain’s South Pole are on the closer side. In the same way, the South Pole induces North Pole in the paper clip. This causes the attraction

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For communication to take place, there has to be:

sasho [114]

Answer:

C. Sharing of the message

Explanation:

...

3 0

3 years ago

Airbags will deploy in a head-on collision, but not in a collision that occurs from an angle.

vfiekz [6]

Rear ended ?? I don't know

8 0

3 years ago

A rectangular billboard 5 feet in height stands in a field so that its bottom is 6 feet above the ground. A nearsighted cow with

maw [93]

Answer:

In order to maximize $\theta$ , the cow must stand 3.74 ft away from the billboard, approximately.

Explanation:

The vertical angle subtended by the billboard at the cow's eye can be calculated from

$\theta = \arctan{\frac{7}{x}} - \arctan{\frac{2}{x}}.$

Now, maximaxing $\theta$ , we have

$\theta_{max} = \frac{d\theta}{dx}|_{x=x_0}=0\\-\frac{7}{x_0^2+49} - \left(\frac{2}{x_0^2+4}\right) = 0\\\frac{7}{x_0^2+49} - \frac{2}{x_0^2+4} = 0.$

Solving the equation for $x_0$

$x_0 = \pm\sqrt{14} \approx 3.74.\\$

Which can be interpretated as the cow standing either one or the other side from the billboard. The next plot confirms that $x_0$ 's positive root, gives a maximum for the angle $\theta$ .

4 0

3 years ago

Read 2 more answers

Drawing conclusions.

Alenkinab [10]

Susan is correct. honey is made of many substances.

5 0

3 years ago

Read 2 more answers

A “constant” is a parameter that stays the same regardless of the variables. One parameter of the cart that is held constant is

Basile [38]

We really don't know for sure, because there's no picture or description
of the cart and you haven't told us anything about it.

But we do know that fan speeds and accelerations are easy to change,
but the mass of things doesn't change.

So I'm pretty sure that it must be the mass of the cart that doesn't change.

6 0

3 years ago

Read 2 more answers