Which of the following is the unit of mass density kg m3 B kg/m2 C kg d kg MS?
Detailed Solution
The correct answer is kg/m3. The SI unit of mass density is kg/m3.
What is density Class 9?
Density Definition: Density is the measurement of how tightly a material is packed together. It is defined as the mass per unit volume. Density Symbol: D or ρ Density Formula: ρ = m/V, where ρ is the density, m is the mass of the object and V is the volume of the object.
How do you find the mass with volume and density?
The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre.
What happens to density when volume increases?
When volume increases, density decreases.
What is the SI unit of force?
The SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg.
What is the SI unit of density *?
kilogram per cubic metre
So, we have found that the SI unit of density is kilogram per cubic metre. It is represented as Kg${{m}^{-3}}$.
What is the SI unit of mass?
kilogram (kg)
The SI unit of mass is the kilogram (kg).
What is the SI unit of volume?
The SI unit of volume is the cubic meter (m3), which is a derived unit. Liter (L) is a special name for the cubic decimeter (dm3). The symbol for the liter is uppercase letter “ell” (L) is preferred to avoid the risk of confusion between the lowercase letter “ell” (l) and the number one (1).
What is the symbol for density?
ρ
ρ = density in g/cm 3. The symbol for density is the Greek letter rho, . m = mass in g.
How do u calculate mass?
One way to calculate mass: Mass = volume × density. Weight is the measure of the gravitational force acting on a mass.
Which is heavier hot or cold water?
C, 39.2deg. F) and hot water are compared, cold water weighs more than hot water. Students should notice that cold water will sink when placed on top of hot water, and hot water will float on the surface of cold water.
Does density change with size?
Explanation: Density is an intensive property. This means that regardless of the object’s shape, size, or quantity, the density of that substance will always be the same. Even if you cut the object into a million pieces, they would still each have the same density.
What is the unit of speed?
metre per second
Speed is defined as the rate of change of distance with time. It has the dimension of distance by time. Thus, the SI unit of speed is given as the combination of the basic unit of distance and the basic unit of Time. Thus, the SI unit of speed is metre per second.
What is the unit velocity?
Velocity is a vector expression of the displacement that an object or particle undergoes with respect to time . The standard unit of velocity magnitude (also known as speed ) is the meter per second (m/s). Alternatively, the centimeter per second (cm/s) can be used to express velocity magnitude.
What is 1 density?
If the relative density is exactly 1 then the densities are equal; that is, equal volumes of the two substances have the same mass. If the reference material is water, then a substance with a relative density (or specific gravity) less than 1 will float in water.
What is unit of viscosity?
The unit of viscosity is newton-second per square metre, which is usually expressed as pascal-second in SI units.
What unit is energy?
Joule
Joule (J).
This is the basic energy unit of the metric system, or in a later more comprehensive formulation, the International System of Units (SI).
Which is unit of force?
newton
The SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg.
What is the symbol for volume?
Units and symbols
| Quantity measured | Unit | Symbol |
|---|---|---|
| Volume | millilitre | mL |
| litre | L | |
| cubic metre | m3 | |
| Speed, velocity | metre per second | m/s |
What are the types of density?
Types of Density
Usually, the density is of two types, one is absolute density, and the other is relative density. Relative density is also known as specific gravity, which is the ratio of the density of a material to the density of reference material.
What is the unit of mass?
The SI unit of mass is the kilogram (kg). In science and technology, the weight of a body in a particular reference frame is defined as the force that gives the body an acceleration equal to the local acceleration of free fall in that reference frame.
What is called mass?
Mass is the quantity of matter in a physical body. It is also a measure of the body’s inertia, the resistance to acceleration (change of velocity) when a net force is applied. An object’s mass also determines the strength of its gravitational attraction to other bodies. Mass.
Is Coke heavier than water?
Regular Coke/Pepsi has a higher density than water, so a can of it sinks in water. Diet Coke/Pepsi has a lower density, so a can of it floats.
How is density affected by pressure?
When pressure increases, density increases. When the pressure decreases, density decreases.
What are 2 ways to increase density?
You can change the density of a substance by heating it, cooling it, or by adding something to it. If an object sinks in water, it’s because the object has a higher density than the water.