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Maksim231197 [3]
3 years ago
12

Type the correct answer in the box. What’s the velocity of the balloon? Use . A hot-air balloon with a mass of 400 kilograms mov

es across the sky with 3,200 joules of kinetic energy. The velocity of the balloon is meters/second.
Physics
2 answers:
alexandr1967 [171]3 years ago
7 0

Answer:

4 m/s would be the answer.

Ulleksa [173]3 years ago
4 0

Answer:

4 m/s would be the answer.

Explanation:

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Which characteristics is common to the four outer planets in out solar system ?
Lubov Fominskaja [6]
I think the answer is B
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3 years ago
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An capacitor consists of two large parallel plates of area A separated by a very small distance d. This capacitor is connected t
scoundrel [369]

Answer:

Will be doubled.

Explanation:

For a capacitor of parallel plates of area A, separated by a distance d, such that the charges in the plates are Q and -Q, the capacitance is written as:

C = \frac{Q}{V}  = e_0\frac{A}{d}

where e₀ is a constant, the electric permittivity.

Now we can isolate V, the potential difference between the plates as:

V = \frac{Q}{e_0} *\frac{d}{A}

Now, notice that the separation between the plates is in the numerator.

Thus, if we double the distance we will get a new potential difference V', such that:

V' = \frac{Q}{e_0} *\frac{2d}{A} = 2*( \frac{Q}{e_0} *\frac{d}{A}) = 2*V\\V' = 2*V

So, if we double the distance between the plates, the potential difference will also be doubled.

6 0
2 years ago
A branch falls from a tree How fast is the branch moving after 0 28 seconds
egoroff_w [7]

Answer:

c. 2.7 m/s

Explanation:

v = a.t + v_{0}\\a = g = 9.81 m/s^{2}} \\t=0.28 s \\v_{0} = 0\\=> v = 9.81 * 0.28 = 2.74 m/s

3 0
2 years ago
if you push your chair across the floor at a constant velocity how does the force of friction compare with the force you exert?
Alik [6]
-- If velocity is constant, then there is no net force
on the chair.

-- If there is no net force on the chair, then friction
must exactly balance out your push.

-- The force of friction is exactly equal in magnitude
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2 years ago
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PLEASEEE HELP ME WITH THIS ALSO. I DONT WANT TO FAIL. You push a merry-go-round on which Kim and Katie are riding. Kim weighs 45
Serjik [45]

Answer:

The body weight

Explanation:

5 0
3 years ago
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