Question

See attached pic for problem. Has 3 parts- B,C and D

Answer 1

Question 3a

To convert

`5GJ\text{ to }kj`

We can use the relationship:

`\begin{gathered} 1\text{ Gigajoules=1000000 Kilo joules} \\ \end{gathered}`

Thus,

`5Gj=1000000Kj`

Question 3b

To convert

`0.00006m\text{ to }\mu\text{m}`

We will make use of the relationship

`1000000\mu m=m`

Thus, the answer will be

`60\mu m`

Question 3c

Given that

`5280\text{ f}eet\text{ =1 mile}`

To convert 55 feet per second to miles per hour, we will follow the steps below

Step 1: Convert 55 feet per second to feet per hour

Since there are 3600 seconds in 1 hour

The value of x can then be obtained as follow

`\begin{gathered} x=3600*55 \\ x=198000\text{ }(ft)/(hour) \end{gathered}`

The next step will be to convert ft per hour to miles per hour

`\begin{gathered} Si\text{nce 5280 f}eet\text{ = 1 mile} \\ \\ \frac{198000ft}{\text{hour}}=y \end{gathered}`

Thus

`\begin{gathered} (198000)/(5280)\text{mile per hour} \\ \\ 37.5\text{ miles per hour} \end{gathered}`

Question 3d

Given that there are 2.2lb in 1 kg, 22.8 lb will be obtained as follow

Thus, the answer is 10.36kg