Quantity I: Increased Average = 1.5, Number of people (n) = 30 Average = Total sum/n Total weight increased = 1.5 × 30 = 45 kg Weight of new man = 45 + 48 = 93 kg Quantity II: Total weight of 60 students = 60 × 70 New weight = (60 × 70) – 72 – 64 + 64 + 52 = (60 × 70) – 20 New average = (4200 – 20)/60 = 69.66 kg
The material which can be deformed permanently by heat and pressure is called a:
Boyle’s Law is applicable to gases under which conditions?
What was invented by 'Zacharias Janssen'?
Two amplifiers are connected one after the other in series (cascaded). The first amplifier has a voltage gain of 12 and the second has a voltage gain o...
Which of the following statement is correct?
I. Magnetite is a natural magnet
II. A freely suspended magnet always aligns in N-S direction
The mass of a star is two times the mass of the Sun. How it will come to an end?
An example of longitudinal waves (in a gas medium) is:
The rate of change of which of the following determines angular velocity?
If the vector sum of torques acting on a system is zero, then the object is in: