believe in fairy stories. At first there were only a few, but in a week or two the country was simply running alive with dragons of all sizes, and in the air you could sometimes see them as thick as a swarm of bees. They all looked alike except as to size. They were green with scales, and they had four legs and a long tail.
Explanation:
YOUR WELCOME :)
Answer:
W= 638.1 J
Explanation:
As we know that
Work done is the area of the force and displacement diagram.
W=∫F.dx
W=Work
F=force
dx=Elemental displacement
From the diagram ,area A
A= 60 x 7.09 + 1/2 x 60 x 7.09
A= 638.1 J
So the work W
W= 638.1 J
Answer:
The right solution is "50200 days".
Explanation:
Given:
Calories intake,
= 6000 kcal,
or,
=
Force,
= 500 N
As we know,
⇒
Or,
⇒
By putting the values, we get
hence,
The number of days will be:
=
=
Answer:
Explanation:
Using the law of the convervation of energy E:
so:
where is the constant of the spring 1, the compressed of the first spring, is the constant of the second spring and is the compressed of the second spring.
Replacing values, we get:
Solving for :
Answer:
Energy absorbing lanyard as per OSHA
Explanation:
Energy absorbing lanyard if working over 6 feet in height so you don't break your back when you fall.