Question
If mass is doubled and velocity is tripled, how will
kinetic energy change?Solution
KE∝mv² KE= 2m × (3v)² KE= 18 × original KE
Which of the following quantities is a scalar?
The resistance of a wire is directly proportional to:
The law of reflection states that the angle of incidence is equal to the angle of reflection. What is the angle of incidence when the angle of reflectio...
Which of the following statement is INCORRECT regarding the comparison between biot-savart law for the magnetic field and coulomb's law for the electro...
If the vector sum of torques acting on a system is zero, then the object is in ________.
A cylindrical wire of non-uniform cross-section has its radius increasing linearly from R to 3R over its length L. If a constant current I flows through...
Calculate the kinetic energy of a body of mass 5 kg moving with a velocity of 4 m/s.
What is the phenomenon of the bending of light as it passes from one medium to another called?
Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by –
The mass density of Kerosene is:
