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Express each of the following in standard form: -1. (a) The mass of a proton in gram is `1673/1000000000000000000000000000` (b) A Helium atom has a diameter of 0.000000022

asked Jan 17, 2022 in 8th-maths by sumit (1.6k points)

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Find x so that `(2/9)^3 xx (2/9)^(-6) =

asked Jan 17, 2022 in 8th-maths by purvi (1.8k points)

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`6^n/6^(-2) =

asked Jan 17, 2022 in 8th-maths by Arun (1.7k points)

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`(16 xx 10^2 xx 64)/(2^4 xx

asked Jan 17, 2022 in 8th-maths by nishit (1.8k points)

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Astronomy The table shows the mass of the planets, the sun and the moon in our solar system. (a) Write the mass of each planet and the Moon in scientific

asked Jan 17, 2022 in 8th-maths by yogita (1.8k points)

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This table shows the mass of one atom for five chemical elements. Use it to answer the question given. Element Mass of atom (kg) TitaniumLeadSilverLithiumHydrogen `7.95 × 10^(–26)` `3.44 × 10^(–25) ``1.79 × 10^(–25)``1.15 × 10^(–26)``1.674 × 10^(–27) `

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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The volume of the Earth is approximately `7.67 xx 10^(–7)` times the volume of the Sun. Express this figure in usual

asked Jan 17, 2022 in 8th-maths by purvi (1.8k points)

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For the following repeater machines, how many times the base machine is applied and how much the total stretch is?

asked Jan 17, 2022 in 8th-maths by Simran (1.8k points)

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In a repeater machine with 0 as an exponent, the base machine is applied 0 times. (a) What do these machines do to a piece of chalk? (b) What do you think the value of 60

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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What happens when 1 cm worms are sent through these hook-ups?

asked Jan 17, 2022 in 8th-maths by yogita (1.8k points)

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Sanchay put a 1cm stick of gum through a `(1 xx 3^(–2))` machine. How long was the stick when it came

asked Jan 17, 2022 in 8th-maths by yogita (1.8k points)

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Neha needs to stretch some sticks to `25^2` times their original lengths, but her `(xx2^5)` machine is broken. Find a hook-up of two repeater machines that will do the same work as a `(xx25^2)` machine. To get started, think about the hookup you could use to replace the `(xx2^5)` machine.

asked Jan 17, 2022 in 8th-maths by nishit (1.8k points)

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Supply the missing information for each diagram. (a) (b) (c) (d)

asked Jan 17, 2022 in 8th-maths by krutika (1.7k points)

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A shirt with marked price Rs 800 was sold at Rs 680. The rate of discount allowed on the shirt

asked Jan 17, 2022 in 8th-maths by uday (1.6k points)

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If `7/3%` of a number is 42, then the number

asked Jan 17, 2022 in 8th-maths by sumit (1.6k points)

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Rs 1600 lent at a compound interest of 5% per annum, compounded half yearly for one year will amount

asked Jan 17, 2022 in 8th-maths by krutika (1.7k points)

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Vishakha offers a discount of 20% on all the items at her shop and still makes a profit of 12%. What is the cost price of an article marked at Rs

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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Suppose for the principal P, rate R% and time T, the simple interest is S and compound interest is C. Consider the

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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A TV set was bought for Rs 26,250 including 5% VAT. The original price of the TV set

asked Jan 17, 2022 in 8th-maths by purvi (1.8k points)

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Percentages are _________ to fractions with _________ equal to

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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