# Question 1.2: Wood has a density of 4.70 slug/ft^3. What is its density ex...

Wood has a density of $4.70 \mathrm{slug} / \mathrm{ft}^3$. What is its density expressed in SI units?

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Question: 1.7

## The pascal (Pa) is actually a very small unit of pressure. To show this, convert 1Pa = 1 N/m² to lb/ft². Atmospheric pressure at sea level is 14.7 lb/in² . How many pascals is this?  ...

Using Table 1–2, we have 1\;\mathrm{Pa}={\f...
Question: 1.15

## Determine the mass of an object that has a weight of (a) 20 mN, (b) 150 kN, and (c) 60 MN. Express the answer to three significant figures. ...

Applying Eq. 1–3, we have a)  m = \frac{W}{...
Question: 1.5

## Represent each of the following quantities in the correct SI form using an appropriate prefix: (a) 0.000 431 kg, (b) 35.3(10^3) N, and (c) 0.005 32 km. ...

 \text { a) } 0.000431 \mathrm{~kg}=0.00043...
Question: 1.4

## Represent each of the following combinations of units in the correct SI form using an appropriate prefix: (a) m/ms, (b) μkm, (c) ks/mg, and (d) km · μN. ...

\text { a) } \mathrm{m} / \mathrm{ms}=\left...
Question: 1.1

## Round off the following numbers to three significant figures: (a) 58 342 m, (b) 68.534 s, (c) 2553 N, and (d) 7555 kg. ...

a) 58.3 km b) 68.5 s c) 2.55 kN d) 7.56 Mg
Question: 1.10

## Evaluate each of the following to three significant figures and express each answer in SI units using an appropriate prefix: (a)(0.691Mm)/(8.60kg)² ,(b) (35mm)² (48 kg)³ ...

 \begin{aligned} a)(0.631 Mm ) /(8.60 kg )^...
Question: 1.11

## Evaluate each of the following to three significant figures and express each answer in Sl units using an appropriate prefix: (a) 354 mg(45 km) (0.0356 kN), (b) (0.004 53 Mg) (201 ms), and (c) 435 MN/23.2 mm. ...

\begin{aligned}a) (354 mg )(45 km ) /(0.035...
Question: 1.13

## Convert each of the following to three significant figures: (a)20 lb.ft  to N.m , (b)450 lb/ft³ to KN/m³, and (c) 15 ft /h to mm /s. ...

Using Table 1–2, we have \begin{aligned}a) ...
Question: 1.14

## Evaluate each of the following and express with an appropriate prefix: (a) (430 kg)² (b) (0.002 mg)² 8and (c) (230 m)³. ...

\text { a) }(430 kg )^2=0.185\left(10^6\rig...