Waves transfer Question 10 options:

Energy

Matter

Density

Heat

its not heat or density

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

statement #3 on andre"s list is false.

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

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.