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2 years ago

احسبي محصلة أزاحة طالب يتحرك مسافة 40m شمالا ثم يتحرك 20m جنوبا ما محصلة ازاحته وفي اي اتجاه ؟

Physics

2 answers:

Phantasy [73]2 years ago

6 0

Answer:

احسبي محصلة أزاحة طالب يتحرك مسافة 40m شمالا ثم يتحرك 20m جنوبا ما محصلة ازاحته وفي اي اتجاه ؟

Serggg [28]2 years ago

4 0

No idea sorry for that

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Answer:

Part a)

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Part b)

P = 480 W

Part c)

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Explanation:

Part a)

Power consumed by blow dryer is given as

$P = iV$

here supply voltage is given as

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current rating of blow dryer is given as

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$P = (120 V)(10 A)$

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Part b)

Power consumed by vacuum cleaner is given as

$P = iV$

here supply voltage is given as

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current rating of vacuum cleaner is given as

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Part c)

Energy consumed in a given interval of time is given as

$Energy = power \times time$

now we have to find the ratio of energy consumed in time interval of 11 minutes

so we have

$\frac{E_{bd}}{E_{vc}} = \frac{P_{bd} t}{P_{vc} t}$

now we have

$\frac{E_{bd}}{E_{vc}} = \frac{1200 W\times 11 min}{480 W \times 11 min}$

$\frac{E_{bd}}{E_{vc}} = 5 : 2$

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