<span>67.2 minutes
First convert the runner's speed from mi/h to km/h by multiplying by 1.60934 km/mi, giving
7.1 mi/h * 1.60934 km/mi = 11.43 km/h
Divide the distance by her speed.
12.8 km / (11.43 km/h) = 1.12 h
Convert hours to minutes by multiplying by 60
1.12 h * 60 min/h = 67.2 min</span>
Answer:
4560 Torr
Explanation:
<u>Boyle's Law</u>
where:
= initial volume
= final volume
= initial pressure
= final pressure
Given:
Substituting the given values into the formula:
To convert atm to Torr, multiply atm by 760:
Answer: metallic solid
Explanation:
Copper is a metallic crystalline solid. A metallic solid is an element that can withstand high temperatures and conduct electricity.
Answer:
The third option
Explanation:
If people have found more volcanic rock layers in the past that would mean that volcanic activity was more common in the past.
