Physics is Easy

Question of the day A
7kg mass sliding on a frictionless surface explodes into three equal masses. After the explosion, the velocities of the three masses are:

Question of the day

Question of Day

Suppose that the current is a function of time with I(t)=a+b t ,
where a and b are positive constants. What is the induced emf in the Loop and the direction of the induced current?

Which SI unit would be used to report the mass of a child?
a)mole, mol
b) liters, L
c) kilograms, kg
d) kelvin, K

Solution: SI unit of mass is Kg i.e kilogram according to MKS system .So to report the mass of a child kg is used.