SECOND SET OF QUESTIONS
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SET 2: Question 1 of 8
How many mm are there in 57 cm?
Type in all zeros, eg 0.00000673
mm
57 cm is the same length as 570 mm.
1 cm = 10 mm
57 cm = 57 x 10 mm
No, that is not the correct answer.
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SET 2: Question 2 of 8
How many µm are there in 0.23 cm?
Type in all zeros, eg 0.00000673
0.23 cm is the same length as 2300 µm
1 cm = 10-2m
1 µm = 10-6m
Thus:
1 centimetre is 10-2 times ie 104 times larger than a micrometre.
10-6
0.23 cm = 0.23 x 10000 µm = 2300 µm
No, that is not the correct answer.
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SET 2: Question 3 of 8
How many nm are there in 0.15 cm?
Type in all zeros, eg 0.00000673
0.15 cm is the same length as 1500000 nm.
1 cm = 10-2m
1 nm = 10-9m
Thus:
1 centimetre is 10-2 times ie 107 times larger than a micrometre.
10-9
0.15 cm = 0.15 x 10000000 nm = 1500000 nm
No, that is not the correct answer.
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SET 2: Question 4 of 8
How many Å are there in 0.0081 cm?
Type in all zeros, eg 0.00000673
0.0081 cm is the same length as 810000 Å.
1 cm = 10-2m
1 Å = 10-10m
Thus
1 centimetre is 10-2 times ie 108 times larger than an Angstrom.
10-10
0.0081 cm = 0.0081 x 100000000 nm = 810000 Å
No, that is not the correct answer.
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SET 2: Question 5 of 8
How many cm are there in 0.75 mm?
Type in all zeros, eg 0.00000673
There are 0.075 cm in 0.75 mm.
1 cm = 10-2 m
1 mm = 10-3 m
Thus
1 millimetre is 10-2 times ie 10 times smaller than a centimetre.
10-3
0.75 mm = 0.75 / 10 cm = 0.075 cm
No, that is not the correct answer.
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SET 2: Question 6 of 8
How many cm are there in 20 µm?
Type in all zeros, eg 0.00000673
There are 0.002 cm in 20 µm.
1 cm = 10-2m
1 µm = 10-6m
Thus:
1 micrometre is 10-2 times ie 104 times smaller than a centimetre.
10-6
20µm = 20 / 10000 cm = 0.002 cm
No, that is not the correct answer.
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SET 2: Question 7 of 8
How many cm are there in 720 nm?
Type in all zeros, eg 0.00000673
There are 0.000072 cm in 720 nm.
1 cm = 10-2m
1 cm = 10-9m
Thus:
1 nanometre is 10-2 times ie 107 times smaller than a centimetre.
10-9
720 nm = 720 / 10000000 cm = 0.000072 cm
No, that is not the correct answer.
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SET 2: Question 8 of 8
How many cm are there in 1500 Å?
Type in all zeros, eg 0.00000673
There are 0.000015 cm in 1500 Å.
1 cm = 10-2m
1 Å = 10-10m
Thus:
1 Angstrom is 10-2 times ie 108 times smaller than a centimetre.
10-10
1500Å = 1500 / 100000000 cm = 0.000015 cm
No, that is not the correct answer.
Have another go: just type in your new answer and press Enter.
If you continue to have problems, have a look at the answer.