4 years ago

How is power defined?

Physics

2 answers:

erastova [34]4 years ago

6 0

d. the rate at which work is accomplished

kumpel [21]4 years ago

5 0

D is the answer to this question. Hope this helps!

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natali 33 [55]

Answer:

c and d

Explanation:

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7 0

3 years ago

A system of ideal gas at 22°C undergoes an ischoric process with an internal energy decrease of 4.30 × 10 3 4.30×103 J to a fina

Komok [63]

Answer:

The approximate change in entropy is -14.72 J/K.

Explanation:

Given that,

Temperature = 22°C

Internal energy $U=4.30\times10^{3}\ J$

Final temperature = 16°C

We need to calculate the approximate change in entropy

Using formula of the entropy

$\Delta S=\dfrac{\Delta U}{T}$

Where, $\Delta U$ = internal energy

T = average temperature

Put the value in to the formula

$\Delta S=\dfrac{-4.30\times10^{3}}{\dfrac{22+273+16+273}{2}}$

$\Delta S=-14.72\ J/K$

Hence, The approximate change in entropy is -14.72 J/K.

5 0

4 years ago

What happens when the crests of two waves overlap

gregori [183]

Energy of the waves are redistributed to form a resultant wave with amplitude given by the summation of individual wave's amplitude.
<span>If the two waves are of same frequency, speed and amplitude and travelling in opposite direction den stationary waves are form.</span>

4 0

4 years ago

The mass of 150cm³ of stone is 400g. its density is

WITCHER [35]

Answer:2.67kgm/s cube

Explanation: density = mass ÷ volume = 400 ÷ 150

3 0

3 years ago

A 70-kg ice skater is standing still on the ice, when a friend tosses him a 10-kg ball that is traveling at +8 m/s. If he catche

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Answer:+1.25 m/s

Explanation: