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4 years ago

How much work will a machine with a power rating of 1.1 x 10^3 watts do in 2.0 hours?

Physics

2 answers:

eduard4 years ago

8 0

The answer to this question is 7.92 * 10^6 J

Hatshy [7]4 years ago

4 0

Power Rating = $1.1 \times 10^3$ W

Time for which the machine is operating = 2 hours

Time in seconds = 2 × 60 × 60

Time = 7200 seconds

Now, we need to use the formula for work done.

Work done = Power × time

Work done = $1.1 \times 10^3 \times 7200$

Work done = $7.92 \times 10^6$ Joules

Hence, work done by the machine in 2 hours is $7.92 \times 10^6$ J.

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Snowcat [4.5K]

Solution :

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$E_P=\int dE \cos$

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If we put an electron on point P, then force on point e is :

$\vec{F}=-|e|\vec{E_P}$

$F= \frac{-eKQx}{(r^2+x^2)^{3/2}}= \frac{-eKQx}{r^3[1+\frac{x^2}{r^2}]^{3/2}}$

If r >> x , then $\frac{x^2}{r^2} \approx 0$

Then, $\frac{-eKQ}{r^3}x$

$ma =\frac{-eKQ}{r^3}x$

$a =\frac{-eKQ}{mr^3}x$

Compare, a = -ω²x

We get,

$\omega^2 = \frac{eKQ}{R^3m}$

$\omega = \sqrt{\frac{eKQ}{r^3m}}$

$2 \pi f = \sqrt{\frac{eKQ}{r^3m}}$

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3 years ago

How do i find the number of leptons in an atom??

Serjik [45]

Answer:

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3 years ago

At what time of day would you be most likely to find that the air over water is significantly warmer than the air over land near

Brut [27]

This would happen later at night or early in the morning.

The reason being land becomes warm and cold quicker than the water because of the heat capacity. So during the day water warms up because of sunlight but at night the land becomes a lot cooler as compared to the water which is still war. So the air over water is significantly warmer than the air over land.

4 0

4 years ago

Read 2 more answers

If the architectural plans show the rough opening of a window to be 3'-3" x 4'-9" , the height of the opening should actually me

tatyana61 [14]

Answer:

height of the opening actually measure is 4'-9"

Explanation:

given data

window size = 3'-3" x 4'-9"

solution

height of the opening should actually measure will be 4'-9" in 3'-3" x 4'-9"