A highspeed train travel with an average speed of 227km/hr. The train travels for 2 hrs how far does the train travel

454 km

Explanation:

A train travels at 227 km per hour ( at average). So to find the distance it travels for 2 hours, you simply multiply the avg speed by time travelled.

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach