3 years ago

Which organisms play roles similar to organisms in water ecosystem

Physics

1 answer:

lina2011 [118]3 years ago

4 0

Is there a multiple choice?

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A capacitor consists of two square plates, 8.7 cm on a side, separated by a 2.0 mm air gap. How much energy would be stored in t

slavikrds [6]

Answer:

122.84 J

Explanation:

Since plate is square, area, A is given by $(8.7/100)^{2}=0.007569m^{2}$

The distance between plates, d, is given in the question as 2mm=0.002m

Charge on plate, Q, as given in the question is 240 $\mu c$

Assuming mica dielectric constant, k of 7

Capacitance, C is given by

C= $\frac {k\epsilon_{o}A}{d}=\frac {(7)(8.85*10^{-12})(0.007569)}{0.002}=2.34*10*^{-10}F$

Stored energy, E is given by

E= $\frac {Q^{2}}{2C}=\frac {(240*10^{-6})^{2}}{2*(2.34*10^{-10})}=122.84J$

Therefore, the stored energy is 122.84 J

5 0

3 years ago

A drag racer starts from rest and accelerates at 10 m/s squared for the

nika2105 [10]

Answer:

54 $\frac{m}{s}$

Explanation:

$v=u+at$

where $u=$ initial velocity

$v=0+(10\frac{m}{s^{2} } )$ × $(5.4s)$

$v=54\frac{m}{s}$

6 0

3 years ago

Can anyone please answer this cq..

ZanzabumX [31]

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1 year ago

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Bad White [126]

I think it’s C) lmk if I’m wrong

7 0

3 years ago

An object has an acceleration of 30.0 m/s/s. The mass of the object is tripled while the net force of the object is constant. Wh

Gelneren [198K]

Known :

m1 = m

m2 = 3m1 = 3m

a1 = 30.0 m/s²

Solution :

Net force of the object is constant, so :

F1 = F2

m1 • a1 = m2 • a2

(m)(30.0 m/s²) = (3m)(a2)

a2 = 10 m/s²

7 0

2 years ago