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3 years ago

Sound travels at a speed of 1188 km in one hour. How many meters will it travel in one second?

Physics

2 answers:

Nana76 [90]3 years ago

7 0

The answer to this question would be 330 m/sec

Darya [45]3 years ago

7 0

Answer: 330 m

Explanation:

Do some unit conversion.

$\frac{1188 km}{1 hr} *\frac{1 hr}{3600 s} \\$ = 0.33 km/s.

So in 1 second, it will travel 0.330 km, or 330 m.

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tino4ka555 [31]

Answer:

7.644 feet

Explanation:

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2 years ago

An alternative to CFL bulbs and incandescent bulbs are light-emitting diode (LED) bulbs. A 16-W LED bulb can replace a 100-W inc

Yanka [14]

Answer:

LED bulb = 0.145 A

Incandescent bulb = 0.909 A

CFL bulb = 0.218 A

Explanation:

Given:

Power rating of LED bulb (P₁) = 16 W

Power rating of incandescent bulb (P₂) = 100 W

Power rating of CFL bulb (P₃) = 24 W

Terminal voltage across the circuit (V) = 110 V

We know that, power is related to terminal voltage and current drawn as:

$P=VI$

Express this in terms of 'I'. This gives,

$I=\frac{P}{V}$

Now, calculate the current drawn in each bulb using their respective values.

For LED bulb, $P_1=16\ W, V=110\ V$

So, current drawn is given as:

$I_1=\frac{16\ W}{110\ V}=0.145\ A$

For incandescent bulb, $P_2=100\ W, V=110\ V$

So, current drawn is given as:

$I_2=\frac{100\ W}{110\ V}=0.909\ A$

For CFL bulb, $P_3=24\ W, V=110\ V$

So, current drawn is given as:

$I_3=\frac{24\ W}{110\ V}=0.218\ A$

Therefore, the currents drawn through LED bulb, incandescent bulb and CFL bulb are 0.145 A, 0.909 A and 0.218 A respectively.

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3 years ago

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3 years ago

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Answer:

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3 years ago

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Natasha2012 [34]

Answer:

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3 years ago