Hi pupil here's your answer ::
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This is due to the inertia of motion that the Blades of an electric fan continue to rotate for some time even after the fan has been switched off.
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Hope this helps .......
A radioactive element with a half-life of 1,000 years, and starting mass of 20 grams, will need 2,000 years to decrease to 5 grams.
Explanation:
The radioactive elements all have a specific half-life. Each element's half-life is well known, and they are used by scientists of numerous fields as they are excellent for determining the age of a particular item, be it or organic or non-organic nature. In this case, we have a radioactive element with a half-life of 1,000 years, and starting mass of 20 grams.
The half-life basically means that half of the mass of an element is lost during a particular period of time. For the element in question we need to find out how much time will be needed for it to decrease to 5 grams. In order to get to the result, we just need to add 1,000 years on every decrease of half of the mass:
20/2 = 10
10/2 = 5
So in 1,000 years, the element in question will decrease to 10 grams, and in further 1,000 years (2,000 cumulatively) it will decrease to 5 grams.
Learn more about radioactive decay brainly.com/question/9796067
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Answer:
Nile is the longest river in the world.
Explanation:
Answer:
9:00 am
Explanation:
Lines of longitude are imaginary lines running from the north pole to the south pole of earth. These lines are used to calculate the time in places. Also when combined with lines of latitude, they are used to give the exact location of a place.
Given the place is at 45°W longitude and the time at GMT is 12:00 noon.
Degree difference = 0° (GMT) - 45° = -45°
1° = 4 min
time difference = -45° * 4 min per degree = -180 minutes = -3 hours
Therefore the local time at a place 45°W longitude = 12:00 noon - 3 hours = 9:00 am
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Hey! </h3>
<em><u>The following attached images shows all of the Math conversion units!</u></em>
Hope this helps! °ω°
