4 years ago

If a star contains a certain element, it can be determined by studying the star’s

Physics

1 answer:

valentina_108 [34]4 years ago

3 0

A. Emission spectrum

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3 years ago

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3 years ago

If Karen rode her bicycle 5 km to school in 30 minutes, what was her average speed? Give your answers in km/h.

Doss [256]

Answer:

10 km/h

Explanation:

Before calculating the average speed, we need to convert the time taken for the trip from minutes to hours. Since 1 hour cointains 60 minutes, we have:

$1 h: 60 min = t : 30 min\\t=\frac{1 h \cdot 30 min}{60 min}=0.5 h$

Karen's average speed is given by:

$v=\frac{d}{t}$

where

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3 years ago

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3 years ago