3
One.
Speed = distance / time = 55 / 28 = 1.96 m/s (correct to 3 significant figures)
733 minutes x 60.0 seconds/minute = 43,980 seconds. This should preferably be written as 4.40 x 104 seconds, because only three significant digits are justified by the value 773 used in the calculation. (The question is unclear; therefore, this may not be the expected answer, which is for the supposed question "Change 733 minutes to seconds.")
30000 milli seconds. Calculation: 1 sec = 1000 milisecs 30 sec = 30 * 1000 millisecs.
Ok, in 1 minute there are 60 seconds,there are also 60 minutes in an hour So the calculation is 60x60=3600 second in 3 hours!
One.
One.
They have three significant digits
The answer kind of depends on what "this problem" is!
2,592,000 seconds.
One day is equal to 60 x 60 x 24 = 86400 seconds. Therefore, rounded to three significant figures, 599 seconds is equal to 599/86400 = 0.00693 days.
Speed = distance / time = 55 / 28 = 1.96 m/s (correct to 3 significant figures)
15 seconds
60 seconds = 1 minute60 minutes = 1 hour→ 7380 second = 7380 ÷ 60 minutes = 123 minutes = 123 ÷ 60 hours = 2 1/20 hours = 2.05 hours
The rules for identifying significant figures when writing or interpreting numbers are as follows: All non-zero digits are considered significant. For example, 91 has two significant figures (9 and 1), while 123.45 has five significant figures (1, 2, 3, 4 and 5). Zeros appearing anywhere between two non-zero digits are significant. Example: 101.1203 has seven significant figures: 1, 0, 1, 1, 2, 0 and 3. Leading zeros are not significant. For example, 0.00052 has two significant figures: 5 and 2. Trailing zeros in a number containing a decimal point are significant. For example, 12.2300 has six significant figures: 1, 2, 2, 3, 0 and 0. The number 0.000122300 still has only six significant figures (the zeros before the 1 are not significant). In addition, 120.00 has five significant figures since it has three trailing zeros.
Divide total meters by total seconds to get meters per second
In 1 hour there is 3600 seconds. The calculation i used was 60x60. i hope this is helpfull.