My gosh im in fifth grade and need an answer stat dude what causes lightning A. build up of electrical charges in the clouds
B. flow of electrical charges among clouds
C. light energy created in the clouds
D. reflection of light in the clouds

it's either A or B because lighting is an electrical discharge caused by imbalance between storm clouds and the ground

Explanation:

pretty sure it's A though

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

the tires are rotating at 0.434 rpmlinear speed=45 m/sdiameter=0.550 mradius=0.275 mnow v= rωω= v/rω=45/0.275ω=163.6 rad/sω=163.6 rad/s (1rev/2π rad) (60s/1m)ω=1563 rpm