Mass

Q. The CGS unit of density is .

1. $gc{m}^{-3}$
2. $kg{m}^{-3}$
3. $kgc{m}^{-3}$

Q. Question 1 (b)
Which of the following has more inertia:
(b) a bicycle and a train?

Q. The mass of a ball measured on earth is 5.0 kg. What will be the mass of the ball if it is taken on to the Moon?

1. $5kg$
2. $\frac{5}{2}kg$
3. $\frac{5}{3}kg$
4. $\frac{5}{6}kg$

Q.

Why does the mass remain the same everywhere?

Q.

The ___ of a body is the quantity of matter it contains.

Q.

Mass is also a form of energy.

1. True
2. False

Q.

____________ is the quantity of matter in a given object.

Q. The inertia of a body depends on its .

1. velocity
2. force
3. mass

Q. The inertia of an object depends on the ______ of the object.

1. speed
2. shape
3. mass
4. volume

Q. A girl swings on a cradle in sitting position. If she stands, the time period of cradle :

1. decreases
2. increases
3. first ioncreases then it remains constant
4. remains constant

Q. Consider a light plastic ball and a heavy stone of the same size. Which of the following statement(s) is/are correct?

1. The plastic ball has more inertia than the stone.
2. They will not have any inertia.
3. The stone has more inertia than the ball.
4. Both of them have the same inertia.

Q.

Mass of an object is 40kg, What is its weight on the earth? (Take g=10m / s²⁾

Q.

What is mass of a body?

Q. Sir/Ma'am I had previously asked a question of "where exactly does the space expand into....."
I received an answer -if space was infinite it wouldn't be expanding into anything because it was already infinite ..
But( to the best of my knowledge),
i feel that I could simply rule out the space being infinite because-
If we had started with some amt of matter then to spread that in an infinite area we would require a density (of space) to be zero exactly , however we even in vaccum find some or the other form of atomic and/or subatomic "substance"....
You can object me by telling that we had started with an infinite amount of matter but then we should have a density of exactly 1 unit because -infinity by -infinity=1
Which is not the real case ..
What now , is this some sort of a paradox

Q. Which of the following has more inertia:
(a) a rubber ball and a stone of the same size?

Q.

If $F$ is the force between two bodies of masses $m_1$ and $m_2$ at a certain separation, then what is the force between $\sqrt{5}{m}_1$ and $\sqrt{3}{m}_2$ at the same separation?

1. $\sqrt{5}F$

2. $\frac{F}{\sqrt{15}}$

3. $\sqrt{15}F$

4. $F$

Q.

why does mass remains unchanged irrespective to the situation ?

Q. For moon, $g=1.67m{s}^{-2}$ and $R=1.74\times {10}^{6}m$.
The Moon's mass is ___ $\times {10}^{22}kg$.

1. 7.6

Q. Match the quantities with their correct units.

1. Energy
2. newton ($\text{N}$)
3. Force
4. joule ($\text{J}$)
5. Displacement
6. metre ($\text{m}$)

Q. Mass of an object mostly remains ____ throughout the universe.

1. zero
2. variable
3. negative
4. constant

Q. A constant force ($F$) is applied on a stationary particle of mass $m$. The velocity attained by the particle in a certain displacement will be proportional to:

1. $m$
2. $1/m$
3. $\sqrt{m}$
4. $\frac{1}{\sqrt{m}}$

Q. Which of the following is incorrect about inertia?

1. A body tends to reduce its speed.
2. A body tends to change its direction of motion.
3. A body tends to increase its speed.
4. A body tends to maintain its direction of motion.

Q. Mass of an object mostly remains ____ throughout the universe.

1. negative
2. zero
3. constant
4. variable

Q. Two masses $4\text{g}$ and $12\text{g}$, are placed horizontally at a distance of $12\text{cm}$ from each other. Another mass of $0.5\text{g}$ is placed in between them such that there is no net force acting on it. Find the distance (in $\text{cm}$) of the third mass from the mass of $4\text{g}$.

1. $-6+6\sqrt{3}\text{cm}$
2. $+6+6\sqrt{3}\text{cm}$
3. $+6-6\sqrt{3}\text{cm}$
4. $6\sqrt{3}\text{cm}$

Q. Which of the following has more inertia:
(a) a rubber ball and a stone of the same size?

Q.

The S.I. unit of weight is _______.

1. newton

2. dyne

3. kilogram

4. gram

Q. What are the reasons for using Mercury as a Barometric Liquid, explain each of the points.

Q. Mass of an object mostly remains ____ throughout the universe.

1. zero
2. negative
3. constant
4. variable

Q.

State two units of mass bigger than a kilogram. Give their relationship with the kilogram.