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tia_tia [17]
3 years ago
13

Round the following numbers.

Physics
1 answer:
crimeas [40]3 years ago
8 0

Answer:

(a) 123.517 to 2 decimal places = 123.52

(b) 14.328 km/hr to 1 decimal place = 14.3

(c) 0.00934 m to 3 decimal places = 0.009

Explanation:

a. 123.517 to 2 decimal places

⇒ to 2 decimal places = 123.52 ( round 7 to 1 since it is up to 5 and add it to 1 before it.)

b. 14.328 km/hr to one decimal place.

⇒ to 1 decimal place = 14.3 (round 8 to 1 since it is up to 5 and add it to 2 before it, the 2 becomes 3, round the 3 to 0 since it is less than 5)

c. 0.00934 m to 3 decimal places.​

⇒ to 3 decimal place = 0.009

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kifflom [539]

Answer:

C. The voltage drop across the resistor is 2.1V and nothing about the current through the resistor.

Explanation:

When connected in parallel, voltage across the resistances are the same. So if 2.1V was dropped across the LED then 2.1V was also dropped across the resistor. However, this tells us nothing about the current through the resistor. We can find the current across the resistor if we know the resistance of the resistor, but that's about it.

If it were a series connection, then the current would have been the same, but the voltage drop were another story.

7 0
3 years ago
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Marta_Voda [28]

Explanation:

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Mass of the sun, m=2×1030 kg

Mass of the earth, M=6×1024 kg

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F=6.7×10−11×(1.5×1011)22×1030×6×1024=3.57×1022 N

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3 years ago
If a typical smelt weighs 225 g, what is the total mass of pcbs in a smelt in the great lakes? If a typical smelt weighs 225 g,
photoshop1234 [79]

Answer;

= 2.34 x 10^-4 g pcbs

Explanation;

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3 years ago
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Answer:

The value of variable capacitor is 1.89 \times 10^{-13} F

Explanation:

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According to the cutoff frequency,

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Now we find the value of capacitance,

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