Let total amount of work be 60 units (LCM of 12 and 20). Efficiency of ‘A’ = 60/12 = 5 units/day Efficiency of ‘B’ = 60/20 = 3 units/day Amount of work done by ‘A’ and ‘B’ together in 6 days = (5 + 3) × 6 = 48 units Time taken by B to complete remaining work = {(60 – 48)/3} = 4 days
Total mechanical energy =
The shape of our Milky Way galaxy is
The polarization of electromagnetic waves demonstrates that they are:
Which of the following is the best conductor of electricity?
Which of the following is an example of longitudinal waves in a gas medium?
In circular motion the direction of velocity changes at _______ points.
A meter stick moves along its length with a certain speed. The apparent length of the moving meter stick as measured by a stationary observer on the gr...
The energy that can harness heat stored below the earth's surface is known as –
Two long parallel conductors are placed 8mm apart from each other carrying a current of 120 Amperes. What will be force per meter length of each one?
The speed of a fast moving electron, having total energy of 2 MeV, is nearly:
