The hare and the tortoise are at the starting line together. When the gun goes off, the hare
moves off at a constant speed of 10 meters per
second. (Ignore the acceleration required to
get the animal to this speed.) The tortoise
starts from a dead stop, but accelerates at a
rate of 2 meters per second per second. Make
a table showing the positions of the two racers
after 1 second, 2 seconds, 3 seconds, and so
forth.
How long will it be before the tortoise
passes the hare?
Answer in units of seconds.

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it

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