3 years ago

What is the current in a circuit that has a resistance of 30.0 o and a power of 55.0 W?

Physics

1 answer:

salantis [7]3 years ago

8 0

Answer:

1.833a

Explanation:

power=current x resistance

p=ir

i=p/r

=55/30

=1.8333a

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A research submarine has a 20-cm-diameter window that is 9.0 cm thick. The manufacturer says the window can withstand forces up

Ratling [72]

Answer:

The maximum safe depth in salt water is 3758.2 m.

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Radius = 10 cm

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$P=3.8\times10^{7}\ Pa$

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$h=\dfrac{P-P_{atm}}{\rho g}$

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$h=\dfrac{3.8\times10^{7}-101325}{1029\times9.8}$

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Hence, The maximum safe depth in salt water is 3758.2 m.

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An ant travels 2.78 cm (West) and then turns and travels 6.25 cm (South 40 degrees East). What is the ant's total displacement?

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$From\ cosine\ theorem:\\\\
c^2=a^2+b^2-2abcos(\angle between\ a\ and\ b)\\\\
a=2,78\\b=6,25\\
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c^2=2,78^2+6,25^2-2*2,78*6,25cos(140^{\circ})\\\\
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