2-1 Basic unit and s.f

How many significant figures are there in 0.0054 grams?

• 2

• 3

• 4

• 5

What is 78.5 rounded to one significant figure?

• 8

• 70

• 79

• 80

How many sig figs are there?
100000000

• 1
• 9
• 10

How many sig figs are there?
4004

• 1
• 2
• 3
• 4

How many sig figs are there?
9009.00

• 2
• 4
• 5
• 6

A wireless device operates at a frequency of 232.2 MHz.
How much is this frequency, in Hz?

•  2.322 × 10⁷
• 2.322 × 10⁸
• 2.322 × 10⁹
• 2.322 × 10¹⁰

Which of the following is a basic unit?
 

• Joule
• Coulomb
• Gram
• Meter

Which of the following shows the prefixs in descending order correctly ?

• mega, giga, kilo, nano
• giga, kilo, mega, nano
• nano, kilo, mega, giga
• giga, mega, kilo, nano

What is the prefix for 10^-3

• mega

• deka

• milli

• centi

A device operates at a frequency of 1.5 GHz.
How much is this frequency, in Hz?

•  1.5 × 10⁶

• 1.5 × 10⁷

• 1.5 × 10⁸

• 1.5 × 10⁹