The kinetic energy of an object of mass, m moving with a velocity of 5 m s −1 is 25 J. What will be its kinetic energy

For hydrogen like atom. En \(\propto\) -\(\frac{Ƶ^2}{n^2}\) En = -k\(\frac{Ƶ^2}{n^2}\) for hydrogen atom- E4 = -k\(\frac{(1)^2}{4^2}\)  E4 = \(\frac{-k}{16}\)  given, E4 = € \(\because\) k = -€ x 16----(1) For Li+2 E1 = \(-\frac{k(3)^2}{1^2}\)  = -k x 9 using equation (1) we get E1 = € x 16 x 9 E1 = 144 €

The object is in motion, so its energy = kinetic energy = 1 /2 mv2  The kinetic energy of the object, when it comes to rest = 0.  Work done on object...

When a freely falling body eventually stops on reaching the ground, its kinetic energy gets converted into heat energy (as the body and ground become warm due to collision), sound...

(a)(i) According to the law of conservation of energy, energy can neither be created nor be destroyed but can be transformed from one form to another. Here, the increase in...

(a) Kinetic energy of an object is defined as the energy possessed by a body by virtue of its motion.  It is given by, K.E = 1/2 mv2  No, the kinetic energy...

As K .E = 1/2 mv2 therefore,  K . E ∝ m  K . E ∝ v2  Therefore, the change in velocity of a body will cause greater change in kinetic energy.

Mass of the rifle, m1 = 4 kg  Mass of the bullet, m2 = 50g = 0.05 kg  Recoil velocity of the rifle = v1  Bullet is fired with an initial velocity, v2...

Yes. Even when an object experiences a net zero external unbalanced force, it is possible that the object is travelling with a non-zero velocity. This is possible only when the...

(d) mv  Mass of the object = m  Velocity = v  Momentum = Mass × Velocity  Momentum = mv