3 years ago

Is gravitational pull strengthened by distance?

1 answer:

5 0

I'm not sure but I think that if objects are closer (less distant), than the gravitational pull is stronger. I'm sorry if I couldn't really help I remember learning about this kind of.

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The potential energy of a particle experiencing a certain kind of force is given by U(x) = 2x + 8 x measured in joules (J), for

masha68 [24]

Answer:

Explanation:

Given

Potential Energy of a particle is given by $U(x)=2x+\frac{8}{x}$

For minimum or maximum Potential Energy differentiate U(x) w.r.t x

$\frac{\mathrm{d} U}{\mathrm{d} x}=2-\frac{8}{x^2}$

putting $\frac{\mathrm{d} }{\mathrm{d} x}=0$

$2-\frac{8}{x^2}=0$

$x^2=\frac{8}{2}$

$x^2=4$

$x=\sqrt{4}=\pm 2$

To know minimum value check $\frac{\mathrm{d^2} U}{\mathrm{d} x^2}$

at x=-2

$\frac{\mathrm{d^2} U}{\mathrm{d} x^2}=\frac{16}{x^3}=-\frac{16}{8}=-2$

so at x=-2 potential energy is minimum $U=-8\ J$

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3 years ago

A student of Physics applies a constant force of 25Newtons while lifting a heavy Physics book up into the air a distance of 2.0m

aleksley [76]

I believe the correct answer from the choices listed above is option 3. The work done by the student to the book would be 50 J. T<span>he </span>work done<span> by gravity is simply the force of gravity times the displacement. That is 25N x 2 m and is equal to 50 J. Hope this answers the question.</span>

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3 years ago

The series circuit shown below, what would happen if one of the light bulbs and its attached wire segment were removed?

rewona [7]

Answer:

The remaining lights would shine with the same brightness.

Explanation:

6 0

3 years ago

Sam and Reagan are arguing about waves. Sam says that sound waves are transverse, but Reagan says they Are longitude. Who is rig

sergij07 [2.7K]

The correct answer is Reagan is right because sound waves are compressional waves.

Reason is because Sound is transmitted through gases, plasma, and liquids as longitudinal waves, also called compression waves. It requires a medium to propagate. Through solids, however, it can be transmitted as both longitudinal waves and transverse waves.

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4 years ago

If you wanna make it easier you can number them going down 1,2,3, or 4 & just tell me the number

prisoha [69]

the number is 1 I hope this help

8 0

3 years ago