Question

Express 0.000000000135 in scientific notation. Express 5690000000 in scientific notation How many significant digits does 705.001...

  1. Express 0.000000000135 in scientific notation.
  1. Express 5690000000 in scientific notation
  1. How many significant digits does 705.001 have?
  1. A motorcycle is traveling at a speed of 38 m/s. What is its speed in km/hr?
  1. A common speed limit in British Columbia is 80 km/hr. What is this speed in m/s?
  1. Considering significant figures, what is the area of a rectangle that is 5.7 m by 9.28 m?
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Homework Answers

Answer #1

Scientific Notation:

0.000000000135 = 1.35 X 10-10

5690000000 = 5.69 X 109

(3)

In the number 705.001, all digits are significant.

So, number of significant digits in the given number is 6.

(4)

1 km = 1000 m

And 1 hour = 3600 seconds

So, the speed of motorcycle is

(5)

(6)

For multiplication of two numbers, the number of significant figures in result should be least among them.

The area of the given rectangle is

Considering the significant figures, the area of the rectangle is 53 m​​​​​​2 because 5.7 has only two significant figures.

For any doubt please comment and please upvote.

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