1 calorie is equal to 48 J. TRUE or false ?

One calorie is equal to ______.

State True or false :

Tap water is a mixture. True or false?

The calorie is defined as 1 cal= 4.86 joule Why as 1 cal= 4J to make the conversions easy?

A calorie is a unit of heat or energy and it equals about 4.2 J, where 1 J = 1 kg m^(2) s^(-2) . Suppose we employ a system of units in which the unit of mass equals alpha kg , the unit of length equals is beta m , the unit of time is gamma s . Show tthat a calorie has a magnitude 4.2 alpha^(-1) beta^(-1) gamma^(2) in terms of the new units.

A calorie is a unit of heat or energy and it equals about 4.2 J, where 1 J = 1 kg m^(2) s^(-2) . Suppose we employ a system of units in which the unit of mass equals alpha kg , the unit of length equals is beta m , the unit of time is gamma s . Show tthat a calorie has a magnitude 4.2 alpha^(-1) beta^(-1) gamma^(2) in terms of the new units.

The calorie is a unit of heat or energy and it equals about 4.2 J where 1J=1kgm^(2)s^(-2) . Suppose we employ a system of units in which the unit of mass equals alpha kg, the unit of length equals beta m and the unit of time is gamma s. Show that the calorie has a magnitude of 4.2alpha^(-1) beta^(-2) gamma^(2) in terms of the new units.

A system works in a cyclic process. It absorbs 20 calories of heat and rejects 60 J of heat during the process. The magnitude of work done (J) is [ 1 "calorie"=4.2 J] :

State, true or false: If the ordinate of a point is equal to its abscissa, the point lies either in the first quadrant or in the second quadrant.