Hi guyspls do answer this qstn as soon as possible...and i will mrk u as brainliestwill get 20pts for freeonly for proper answers

find the electromagnetic force if the charges are 4*10 raised to -4 and 5*10 raised to -6 and the distance between them are 30cm

a person with a mass of 106kg has a weight of 1060n

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

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min

answera compound;