1 year ago

How far away is the closest star?

Physics

2 answers:

sukhopar [10]1 year ago

8 0

Answer: Proxima Centauri is the closet star about 40,208,000,000,000 km away.

Explanation:

balu736 [363]1 year ago

4 0

Answer:

The closest star is about 25,300,000,000,000 miles (39,900,000,000,000 kilometers) away

Explanation:

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The fastest speed ever measured for a tennis ball served by a player was 263 km/h. The distance of the tennis court from one end

Paha777 [63]

Answer:

0.3257 seconds

39.67 m/s

Explanation:

Speed = 263 km/h

Converting to m/s

$1\ km/h=\frac{1}{3.6}\ m/s$

$263\ km/h=263\times \frac{1}{3.6}\ m/s=\frac{1315}{18}\ m/s$

Distance to travel = 23.8 m

Time = Distance / Speed

$Time=\frac{23.8}{\frac{1315}{18}}=0.3257\ s$

The time taken to go from one end of the court to the other is 0.3257 seconds

Time = 0.6 s

Speed = Distance / Time

$Speed=\frac{23.8}{0.6}=39.67\ m/s$

The speed of the tennis ball is 39.67 m/s

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Answer:

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fenix001 [56]

The universal force that is effective over the longest distance between very massive objects like planets is Gravity

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PilotLPTM [1.2K]

Answer:

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if a current of 0.3 ampere flows through a conductor of resistance of 11.7 ohm's,the voltage across the ends of the conductor is

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Here,

Resistance = 11.7

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