3 years ago

The best example of heat transfer by convection is when

1 answer:

6 0

A). Heat travels from the sun to the soil by radiation.

B). A ceiling fan moving air around doesn't say anything about heat.

C). It's not <em>heat</em> rising from a chimney. It's heated air.
Whenever you see a heated substance rising through some of
the same substance that's cooler, you're seeing convection.

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A school bus transporting students to school is an example of

jok3333 [9.3K]

Answer:

The answer is D. If I got this right will you please mark me as Brainliest.

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3 years ago

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Three Small Identical Balls Have Charges -3 Times 10^-12 C, 8 Times 10^12 C And 4 Times 10^-12 C Respectively. They Are Brought

IgorLugansk [536]

Answer:

The charge in each ball will be 3 * 10^-12 C

Explanation:

(Assuming the correct charge of the second ball is 8 * 10^-12)

When the balls are brought in contact, all the charges are split evenly among then.

So first we need to find the total charge combined:

(-3 * 10^-12) + (8 * 10^-12) + (4 * 10^-12) = 9 * 10^-12 C

Then, when the balls are separated, each ball will have one third of the total charge, so in the end they will have the same charge:

(9 * 10^-12) / 3 = 3 * 10^-12 C

So the charge in each ball will be 3 * 10^-12 C

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3 years ago

It decomposes in a first-order reaction with a rate constant of 14 s–1. how long would it take for an initial concentration of 0

VikaD [51]

The rate constant of a reaction can be computed by the ratio of the changes in the concentration and time take taken for it to decompose. Thus, if the rate constant is given to be 14 M/s, we have

$rate = \frac{-(C_{new} - C_{old})}{t}$

where C are the concentration values and t is the time taken for it to decompose.

$14 = \frac{-(0.02 - 0.06)}{t}$
$t = 0.003 s$

Thus, it will take 0.003 s for it to decompose.
Answer: 0.003 s

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3 years ago

A force of 10 n acts on a mass of 5 kg producing an acceleration of 1.5 m/s2 what is the magnitude of the force of friction acti

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The friction is 2.5N. The Net force is 10 N - 2.5 N .= 7.5 N.
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No cubic expansion given

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