It's your birthday, and to celebrate you're going to make your first bungee jump. you stand on a bridge 110 m above a raging river and attach a 31-m-long bungee cord to your harness. a bungee cord, for practical purposes, is just a long spring, and this cord has a spring constant of 42 n/m. assume that your mass is 80 kg. after a long hesitation, you dive off the bridge. how far are you above the water when the cord reaches its maximum elongation?

h=20.66m

Explanation:

First we need the speed when the cord starts stretching:

  This will be our initial speed for a balance of energy.

By conservation of energy:

Where

is your height at its maximum elongation

is the height of the bridge

is the length of the unstretched bungee cord

Solving for h:

 and  Since 99m is higher than the initial height of 79m, we discard that value.

So, the final height above water is 20.66m

so easy. just google the electromagnetic waves and it’ll pop up.

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!