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rodikova [14]
3 years ago
9

If a 75-kg skater starts his skate at 8.0m, at his lowest point (height = 0), what is

Physics
1 answer:
Tanya [424]3 years ago
6 0
Mgh= 1/2 m v^2
gh= 1/2 v^2 9.8 * 8=  1/2 v^2
solve for v
V = sqrt(2gH)where H = 8 m.
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Charge is distributed uniformly along a long straight wire. the electric field 2 cm from the wire is 20 n/c. the electric field
Serjik [45]

The electric field 4cm from the wire is

É = 10nc { }^{ - 1}

Given:

charge is distributed uniformly along a long straight wire.

electric field 2cm from the wire is 20n/c

To find:

electric field 4cm from the wire

what is electric field?

Electric field is the region around charge particle or charged body in which if another charge is placed it experiences electrostatic force.An electric field is the physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, either attracting or repelling them.

E   ∝ \frac{1}{r}

\frac{E}{É}  =  \frac{r2}{r1}

\frac{20}{ É }  =  \frac{4}{2}

É =  \frac{40}{4}

É = 10nc {}^{ - 1}

thus the electric field 4cm from the wire is

É = 10nc { }^{ - 1}

learn more about electrostatic force from here: brainly.com/question/28166144

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7 0
2 years ago
Air is warmed and moisten as it moves through both the mouth and nasal passages.
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Well, in my own personal case, I can actually move the air in either
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3 0
3 years ago
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ioda

Answer:        

By the law of conservation of mechanical energy, in the absence of any drag, when the rock falls towards the ground, the potential energy gets converted to kinetic energy. Once the rock hits the ground, it does not move. This is because, the energy is dissipated as sound or heat (to the environment). The total energy remains conserved. Only the form of energy changes.

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Please help i have to pass
lana66690 [7]
Hey kid!

So let’s not make this complicated. Obviously this word problem is wanting to confuse you with all these fancy words but, we’re not letting that get in the way!

Our two numbers are 6 and 12. If you think about it... 12 divided by 6 equals 2!!
That would make your answer B) 2m.

Happy to help!
~Brooke❤️
3 0
3 years ago
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