3 years ago

What are the prediction made by the second and third apparitions?

Physics

1 answer:

julsineya [31]3 years ago

3 0

This is too late too answer?

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A battery charger can produce 3A at 12 Volt and charges a battery fer 2 hr. Calculate work in KJ.

Oksi-84 [34.3K]

Answer: 259.2 KJ

Explanation:

The formula calculate work don in a circuit is given by :-

$W=QV$ , where Q is charge and V is the potential difference.

The formula to calculate charge in circuit :-

$Q=It$ , where I is current and t is time.

Given : Current : $I=3A$

Potential difference : $V=12\ V$

Time : $t=2\ hr=2(3600)\text{ seconds}=7200\text{ seconds}$

Now, $Q=3(7200)=21,600\ C$

Then, $W=(21600)(12)=259,200\text{ Joules}=259.2\text{ KJ}$

Hence, the work done = 259.2 KJ

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3 years ago

What is the density of a substance that has a mass of 20 g and a volume of 10mL

jenyasd209 [6]

Answer:

Density =mass/volume 20/10=2

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3 years ago

a convex mirror has a focal length of 0.20 metre calculate the distance of the image of an object placed 0.30 cm from the mirror

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8 because of the amount of calcium in the equator of the state Minnesota

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3 years ago

What properties characteristics we use to tell the difference between of matter

Mars2501 [29]

Answer:

By using the Physical property we can tell the difference between matter and mass

Explanation:

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3 years ago

A=(v – u)/t<br><br> i. V as subject<br> ii. U as subject<br> iii. T as subject

Norma-Jean [14]

Answer:

$a = \frac{(v - u)}{t} \\ v - u = at \\ v = at + u$

ii.

$a = \frac{(v - u)}{t} \\ v - u = at \\ u = v - at$

iii.

$a = \frac{(v - u)}{t} \\ ta = v - u \\ t = \frac{(v - u)}{a}$

I hope I helped you^_^

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3 years ago