[" (c) A horse and a dog are running with the same speed.If the weight of the horse is ten times that of the "],[" dog,what is the ratio,of their kinetic energies? "]

A horse and a dog are running with the same velocity- If the mass of horse is ten times the mass of the dog then what will be ratio of their kinetic energy ?

If an elephant and a bull are running with the same speed, which one will have more kinetic energy? Give reasons for your answer

A man travels 120 km by ship, 450 km by rail and 60 km by horse taking altogether 13 hrs 30 min. The speed of the train is 3 times that of the horse and 1½ times that of the ship. Find the speed of the train.

A photon and an electron moving with a velocity v have the same de broglie wavelength . Then the ratio of the kinetic energy of the electron to the kinetic energy of the photon is [C is the speed of light ]

A horse runs along with a speed of 20 km/hr. A lantern is at the centre of the circle. A fence is along the tangent to the circle at the point at which the horse starts. The speed with which the shadow of the horse moves along the fence at the moment when it covers 1/8 of the circle in km/hr is.

The sound level of a dog's bark is 50 dB . The intensity of a rock concert is 10,000 times that of dog's bark. What is the sound level of the rock concert?

The sound level of a dog's bark is 50 dB . The intensity of a rock concert is 10,000 times that of dog's bark. What is the sound level of the rock concert?