Because of the relatively high attraction of water molecules to each other through a web of hydrogen bonds, water has a higher surface tension (72.8 millinewtons (mN) per meter at 20 °C) than most other liquids. ... Surface tension has the dimension of force per unit length, or of energy per unit area.

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meganwintergirl

03.02.2023

Mathematics

Ishi walked:
$total \: distance \: walked \: = 2 \frac{1}{2} \: miles$
At constant rate of :
4 miles/hr

Convert :
4 miles/hr × 60mins/1

*So we know part of your answer includes
$4 \frac{miles}{hour} \ \div \: \frac{60mins}{1}$
Next step:
$\\ 2 \frac{1}{2}miles \: \\ = (x \: mins) \times 4 \frac{miles}{hour} \ \div\frac{60mins}{1} \: \\ \\ x \: mins \\ =2 \frac{1}{2}miles \div \: 4 \frac{miles}{hour} \ \div \frac{60mins}{1} \: \:$
answer is 3rd option.

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