Advertisements
Advertisements
प्रश्न
Express the following in standard form:
Express 2 years in seconds.
Advertisements
उत्तर
Given, 2 years = 2 × 365 days ...[∵ 1 year = 365 days approx]
= 2 × 365 × 24 hours ...[∵ 1 day = 24 hours]
= 2 × 365 × 24 × 60 min ...[∵ 1 hour = 60 min]
= 2 × 365 × 24 × 60 × 60 s ...[∵ 1 min = 60 s]
= 63072000 s
Standard form of 63072000 = 63072 × 10 × 10 × 10 ...[∵ am × an = (a)m + n]
= 63072 × 103
= 6.3072 × 103 × 104
= 6.3072 × 107 s
APPEARS IN
संबंधित प्रश्न
Express the number appearing in the given statement in standard form.
1 micron is equal to `1/1000000` m
Write the following numbers in the usual form:
3.61492 × 106
The standard form of `(1/100000000)` is ______.
The usual form of 2.39461 × 106 is _______.
The standard form for 32,50,00,00,000 is ______.
Express the following in standard form:
Mass of a molecule of hydrogen gas is about 0.00000000000000000000334 tons.
Express the following in standard form:
Human body has 1 trillon of cells which vary in shapes and sizes.
About 230 billion litres of water flows through a river each day. How many litres of water flows through that river in a week? How many litres of water flows through the river in an year? Write your answer in standard notation.
A half-life is the amount of time that it takes for a radioactive substance to decay to one half of its original quantity.
Suppose radioactive decay causes 300 grams of a substance to decrease to 300 × 2–3 grams after 3 half-lives. Evaluate 300 × 2–3 to determine how many grams of the substance are left.
Explain why the expression 300 × 2–n can be used to find the amount of the substance that remains after n half-lives.
Express the following in exponential form:
`(-125)/343`
