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Time
This category is for questions about the methods humans go about measuring the passage of time. You can also find questions about converting one unit of time to another.
9,511 Questions
How many seconds are there in 15 minutes?
There are 60 seconds in one minute. Therefore, 15 seconds is equal to 15/60 = 0.25 minutes.
What time is a quarter to seven?
A quarter to seven is 6:45 because at 6:45 there are fifteen minutes (a quarter of an hour) until 7:00.
What times occur after 3pm 9am midnight 9pm 3pm?
All the given times follow 3PM but they can also precede 3PM. To determine if a time follows or precedes a given time you must know the day or date of both times. That is, 3PM tomorrow comes after 3PM today, but 3PM yesterday precedes 3PM today.
1 MHz = 1,000,000 Hz 40,000 Hz = (40,000/1,000,000) = 0.04 MHz
Between noon and midnight how many times will the minute hand pass over the hour hand?
After 12:00 Noon and before 12:00 Midnight:
(The following are all approximate, since the hour-hand also moves during the hour):
1:06, 2:11, 3:17, 4:22, 5:28, 6:33, 7:39, 8:44, 9:50, 10:55.
Ten times.
If time is money is money time?
The "Time is money" saying just means that you should not waste time doing something else and try and make money. Now depending on how you mean it, money can be time. Sure, you cannot use money to add time to your own life, but you can use money to hire others to do things you don't have time to do, or the things you don't enjoy doing.
How many minutes before 12 noon is it if 72 minutes ago it was twice as many minutes past 9am?
It is 36 minutes before noon, or 11:24 am.
This is how I got it...
Change all hours into minutes by first multiplying them by 60. For example, 1 o'clock would be (1) (60) or just 60.
Noon or 12 = 720 and 9am = 540
Now for X.
X will be current time in minutes before noon and that equals noon-x or 720-x.
Now, 72 minutes ago was current time... minus 72
That make the equation 720-x-72
Those minutes have to be twice as many past nine so you can write 540+2x
Now, those two equations have to balance so 720-x-72=540+2x
after you subtract 540 from both sides and add x to both sides, you are left with 108= 3x
divide both sides by 3 and BOOM...36
36 minutes before noon is 11:24
Now to check...
11:24 is 2hrs or (120 minutes) + 24 minutes past 9
144 minutes
11:24 minus 72 minutes (1hr + 10 minutes) is 10:12
from 9 until 10:12 is
72 minutes
(2) (72)= 144.... It checks out.
How many hours is there in a day in Io?
Interesting question. What makes a day on Io ? Is it having the sun in the sky, or having Jupiter in the sky ? And would that choice make a difference in the best answer ? I'll take the easy way out: Io's rotation on its axis is in sync with its period of revolution around Jupiter. Both are = 1.769 earth days = approx. 42hours 27.5minutes
How many minutes are in 36000 seconds?
60 seconds = 1 minute
600 seconds = 10 minutes
6000 seconds = 100 minutes
6000 seconds * (times) 6 = 36000 seconds
100 minutes * 6 = 600 minutes.
1 hour = 60 minutes 1 day = 24 hours = (24 x 60) = 1,440 minutes 90 days = (90 x 1,440) = 129,600 minutes. Why do you ask ?
It is difficult to provide a definitive answer because you need to think about when you start counting and how many leap years are in the 15 year period.
This is how you would go about it:
Definitions:-
* 365 Days in a Year * (366 Days in a leap year) * 24 hours in a day * 60 minutes in an hour Thus (ignoring leap years) 15*265*24*60 = 7,884,000 minutes
"A few" is am imprecise term and the number that it refers to will vary from one person to another. However, as a rough guide, a few is more than 2. Also, the next larger unit is a week, so "a few" is likely to refer to less than that.
The Babylonians had a base 60 system-- 60 is a nice number, since 2,3,and 5 all divide into it and the year has roughly 360 days.
The fact that 60 seconds = one minute and 60 minutes = one hour is a remnant from their system.
