Tag: motion and measurement

Heat is a form of energy that flow from a hotter body to a colder one.

Calorie is defined as the amount of heat energy needed to raise the temperature of one gram of pure water by one degree Celsius. $1$ Kilocalorie are $1000$ calories, the amount of caloric energy needed to raise the mass of$1$ kg of pure water by $1^0C$. $1$ kilocalorie is $4200$ Joules.

Standard unit does not change with respect to time and space. Thus option B is correct.

The S.I. unit of temperature as per the International System of Units is Kelvin which is represented by the symbol $K$. The Kelvin scale is widely accepted or used in the field of science and engineering.

The main quantity that measures the motion of a body is momentum. An object's momentum increases with the object's mass and with its velocity.

When current $ I $ flow in the circular loop of area $a$ than , magnetic moment will be $M=Ia= Am^2$

Ampere-hour is the unit of quantity of electricity or quantity of electric charge.

The universal gravitational constant G has a standard value of approximately 6.673 * 10^-11 Nm^2/kg^2.

Strain is defined as the ratio of change in dimension to the original dimension. Since it is a ratio of two identical physical quantities, it is a dimensionless quantity.