Review part a an object is 29.0 cm from a screen what are the radi of a symmetric converging plastic lens (ie, two equally ourved surtaces) that will form an image on the screen twice the height of the object? (take the index of refraction of plastic to be 1.59.) express your answer with the appropriate units.

R = 22.81 cm

Explanation:

As we know that distance of object from screen is 29 cm

also we know that

(since its a real image so magnification must be negative)

now we have

now by lens formula

now we know by lens maker's formula

R = 22.81 cm

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

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