Problem 26
On a fishing trip you catch a bass, a rock cod, and a salmon with masses of \(1.07 \mathrm{~kg}, 6.0 \mathrm{~kg}\), and \(6.05 \mathrm{~kg}\), respectively. What is the total mass of your catch?
Problem 27
What is the perimeter of a sheet of paper that is \(25.2 \mathrm{~cm}\) tall and \(18.1 \mathrm{~cm}\) wide?
Problem 28
How many significant figures are there in (a) \(0.000054\) and (b) \(3.001 \times 10^{5}\) ?
Problem 29
The first six digits of the square root of 2 are \(1.41421\). What is the square root of 2 to four significant figures?
Problem 30
Give three examples of a physical quantity.
Problem 31
The height of a picture frame is known to three significant figures, and the width is known to two significant figures. How many significant figures are there in the area of the picture frame?
Problem 32
How can a speed of \(100 \mathrm{~m} / \mathrm{s}\) be written so that it has three significant figures?
Problem 33
How are speed and velocity similar? How are they different?
Problem 34
A poster is \(0.95 \mathrm{~m}\) high and \(1.0 \mathrm{~m}\) wide. How many digits follow the decimal point when the perimeter of the poster is expressed with the correct number of significant figures?
Problem 35
The speed of light to five significant figures is \(2.9979 \times 10^{8} \mathrm{~m} / \mathrm{s}\). What is the speed of light to three significant figures?
