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प्रश्न
Solve the following numerical problem.
The masses of five marbles are 50 g, 55 g, 60 g, 65 g, and 70 g. Find their average mass.
उत्तर
The sum of masses of all marbles
= 50 g + 55 g + 60 g + 65 g + 70 g = 300 g
Number of marbles = 5
Average mass of a marble = sum of mass / no. of marbles
= 300 / 5 g
= 60 g
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संबंधित प्रश्न
Just as precise measurements are necessary in science, it is equally important to be able to make rough estimates of quantities using rudimentary ideas and common observations. Think of ways by which you can estimate the following (where an estimate is difficult to obtain, try to get an upper bound on the quantity):
Fill in the blank:
The ............ of an object is measured with the help of a beam balance.
Answer the following in short.
What do you understand by the term ‘mass’? Name any one instrument used for weighing.
Fill in the blank.
The amount of matter contained in a body is known as its ...........
Name any one instrument used for measuring mass.
Which among the following is not a device to measure mass?
State whether true or false. If false, correct the statement.
A physical balance is more sensitive than a beam balance.
Mass is ______.
Write a short note on the following:
Common (beam) balance:
Name the device used for measuring the mass of atoms and molecules.
