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Conversion and sceintifc notation problemsa) The speed needed to escape the pull of earth’s gravity is 2.53 x 104mi/hr. What is this speed inm/s?b) The Voyager 1 spacecraft is already over 2.1 × 1013 m away, how much is it in nanometers?

Question

Conversion and sceintifc notation problems

a) The speed needed to escape the pull of earth’s gravity is 2.53 x 104mi/hr. What is this speed in
m/s?

b) The Voyager 1 spacecraft is already over 2.1 × 1013 m away, how much is it in nanometers?

check_circleAnswer
Step 1

(a) Convert the unit of speed required to escape the p...

1 mile 1609.34 m
1 hr 3600 s
Hence
1mile
1609.34 m
1 hr
3600 s
Convert mi/hr to m/s:
2.53x10 mi 1hr 1609.34 m
2.53x10 mi/hr
1 mi
3600s
hr
= 11310.08 m/s 11.3x103 m/s
Speed needed to escape the pull of gravity = 11.3x 103 m/s
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1 mile 1609.34 m 1 hr 3600 s Hence 1mile 1609.34 m 1 hr 3600 s Convert mi/hr to m/s: 2.53x10 mi 1hr 1609.34 m 2.53x10 mi/hr 1 mi 3600s hr = 11310.08 m/s 11.3x103 m/s Speed needed to escape the pull of gravity = 11.3x 103 m/s

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