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vovikov84 [41]
2 years ago
7

Potential energy is the energy an object has because of its position; it is energy waiting to be released. What conclusion is BE

ST supported by the selection above? A All still objects have potential energy. B Some objects have more energy than others. C Most still objects do not have potential energy. D Potential energy makes objects move.
Physics
1 answer:
bija089 [108]2 years ago
7 0

Answer:

Explanation:

An object can store energy as the result of its position. For example, the heavy ball of a demolition machine is storing energy when it is held at an elevated position. This stored energy of position is referred to as potential energy. Similarly, a drawn bow is able to store energy as the result of its position. When assuming its usual position (i.e., when not drawn), there is no energy stored in the bow. Yet when its position is altered from its usual equilibrium position, the bow is able to store energy by virtue of its position. This stored energy of position is referred to as potential energy. Potential energy is the stored energy of position possessed by an object.

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3 years ago
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Why do we see black? Is light being admitted reflected or absorbed or transmitted
Diano4ka-milaya [45]

Answer:When white light strikes an object, each individual frequency of light is transmitted, reflected, or absorbed, depending on the properties of the surface molecules. If all frequencies are absorbed by the object, then it appears black. If all frequencies are reflected, then it appears white.

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3 years ago
How many signifficant figures do the following number have 258​
Romashka [77]

Answer:

<u>Facts about 258</u>

<u>Sig Figs</u>

3

<u>258</u>

<u>Decimals</u>

0

<u>Scientific Notation</u>

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<u>E-Notation</u>

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<u>Words</u>

two hundred fifty-eight

Explanation:

258 Rounded to Fewer Sig Figs

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5 0
3 years ago
A 40-kg box is being pushed along a horizontal smooth surface. The pushing force is 15 n directed at an angle of 15° below the
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Answer:

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Explanation:

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We have to find the magnitude of the acceleration.

Let the acceleration be "a".

FBD is attached with where we can see the horizontal and vertical component of force.

⇒ F_x=Fcos(\theta)          and             ⇒ F_y=Fsin (\theta)

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⇒ Applying concept of  forces.

⇒ \sum F_x=F_n_e_t =F-f

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⇒ ma =F-f       <em>  ...Newtons second law Fnet = ma</em>

⇒ a =\frac{F-f}{m}              

⇒ Plugging the values.

⇒ a =\frac{15cos(15)-0}{40}     <em>...f is the friction which is zero here.</em>

⇒ a =\frac{14.48}{40}

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Magnitude of the acceleration of the crate is 0.362 m/s^2.

4 0
3 years ago
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nlexa [21]

Answer:

yes

Explanation:

As the formula is α= ΔL/L*ΔT  where alpha (α) is the sign of coefficient of linear expansion

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