Question

An engine can move at a speed of 20/3 m/s without any wagon attached and reduction in the speed of the train is directly proportional to the square root of number of wagons attached to the engine. When the number of wagons attached to engine are 9 than its speed is 5 m/ s . Find the greatest number of wagons attached to the engine with which engine can move ​

Answer 1

Step-by-step explanation:

An a-particle and a proton enter a uniform magnetic field. Find the ratio of radius of a particle to that of proton where speed of a partide is twice the speed

of proton