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NeX [460]
3 years ago
13

A ball was dropped and had a mass of .2 kg and was falling with a force of 2 N, what was its acceleration?

Physics
1 answer:
Musya8 [376]3 years ago
7 0

Answer:

10m/s I believe

Explanation:

F=MA

A=F/M

A=2/0.2

A=10m/s

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A biconvex lens is formed by using a piece of plastic(n=1.70).
creativ13 [48]

Answer:

f =17.15\ cm

Explanation:

given,

refractive index of lens, n = 1.70

Radius of curvature of front surface. R₁ = 20 cm

Radius of curvature of the back surface, R₂ = 30 cm

focal length= ?

\dfrac{1}{f}=(n-1)(\dfrac{1}{R_1}-\dfrac{1}{R_2})

    R₁ = +20 cm

    R₂ = -30 cm

    n = 1.70

\dfrac{1}{f}=(1.70-1)(\dfrac{1}{20}-\dfrac{1}{-30})

\dfrac{1}{f}=0.70 \times 0.0833

f = \dfrac{1}{0.7 \times 0.0833}

f =17.15\ cm

the focal length of the lens is equal to 17.15 cm

3 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Chuge%5Cbold%7B%5Cpurple%7B%5Cbold%7B%E2%9A%A1Gravitational%20Constant%3F%E2%9A%A1%7D%7D%7D%
baherus [9]

\huge\underline\mathtt\colorbox{cyan}{G=}

6.673 \times  {10}^{ - 11}

And unit is Nm^2/kg^2

8 0
2 years ago
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Answer question 83 and 84
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83. Gravity is activity as a force on the cart.

84. The box has gathered kinetic energy and momentum and will continue going forward.
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What is the operating life time of a PV Module?
julia-pushkina [17]

Answer:

The industry standard life span is about 25 to 30 years, and that means that some panels installed at the early end of the current boom aren't long from being retired is the operating life time of a PV module .

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Which law of physics relates electric fields and current
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Answer:

Ohms law

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