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Vsevolod [243]
3 years ago
12

If a soccer ball takes 20 seconds to roll 10 meters, what is the average speed of the soccer ball?

Physics
1 answer:
xxTIMURxx [149]3 years ago
5 0
2 Seconds per 1 meter
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Two large rectangular aluminum plates of area 180 cm2 face each other with a separation of 3 mm between them. The plates are cha
lbvjy [14]

Answer:

Electric flux;

Φ = 30.095 × 10⁴ N.m²/C

Explanation:

We are given;

Charge on plate; q = 17 µC = 17 × 10^(-6) C

Area of the plates; A_p = 180 cm² = 180 × 10^(-4) m²

Angle between the normal of the area and electric field; θ = 4°

Radius;r = 3 cm = 3 × 10^(-2) m = 0.03 m

Permittivity of free space;ε_o = 8.85 × 10^(-12) C²/N.m²

The charge density on the plate is given by the formula;

σ = q/A_p

Thus;

σ = (17 × 10^(-6))/(180 × 10^(-4))

σ = 0.944 × 10^(-3) C/m²

Also, the electric field is given by the formula;

E = σ/ε_o

E = (0.944 × 10^(-3))/(8.85 × 10^(-12))

E = 1.067 × 10^(8) N/C

Now, the formula for electric flux for uniform electric field is given as;

Φ = EAcos θ

Where A = πr² = π × 0.03² = 9π × 10^(-4) m²

Thus;

Φ = 1.067 × 10^(8) × 9π × 10^(-4) × cos 4

Φ = 30.095 × 10⁴ N.m²/C

3 0
3 years ago
"Darwin's finches" reside on the Galapagos Islands. Each species has a different type of beak, however, they can all be traced b
Ivahew [28]
It would be adaptation because the finches live in different islands and each have different weather and  resources  
3 0
3 years ago
Read 2 more answers
Why do you not want to stand still when on offense?
goldenfox [79]

It makes it harder for the defense to cover you.

4 0
3 years ago
15 points!
VMariaS [17]

Answer:

4.12\times 10^{-5}\ J.

Explanation:

Given that,

Capacitance, C=1.4\times 10^{-7}\ F

Charge stored in the capacitor, Q=3.4\times 10^{-6}\ C

We need to find the electric potential energy stored in the capacitor. The formula for the electric potential energy stored in the capacitor is given by :

E=\dfrac{Q^2}{2C}

Put all the values,

E=\dfrac{(3.4\times 10^{-6})^2}{2\times 1.4\times 10^{-7}}\\\\=4.12\times 10^{-5}\ J

So, the required electric potential eenergy is equal to 4.12\times 10^{-5}\ J.

3 0
3 years ago
Help help help help please
eduard

Answer:

The sediment settled with the largest particles at the bottom and the smaller at the top.

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