Kevin draws a figure that has 4 sides all sides have the same length his figure has no right angels what figure does he draw
1 answer:
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Answer:
0.245
Explanation:
When the block is released, the initial elastic potential energy stored in the spring is entirely converted into kinetic energy of the block.
Therefore, we can calculate the initial speed of the block:
where the term on the left is the potential energy and where the term on the right is the kinetic energy, and where
k = 4500 N/m is the spring constant
x = 8.0 cm = 0.08 m is the compression of the spring
m = 3.0 kg is the mass of the block
v is the initial velocity
Solving for v,
Then, after the block is released, all its kinetic energy is converted into thermal energy as the block slows down, due to friction. Therefore, the work done by friction is equal to the initial kinetic energy of the block.
The force of friction is
where
is the coefficient of friction
is the acceleration of gravity
So the work done by it is (in magnitude)
where
d = 2.0 m is the distance covered
Therefore,
And solving for ,
Answer:
The work done in stretching the spring is 0.875 J.
Explanation:
Given that,
Force = 140 N
Natural length = 60-40 = 20 cm
Stretch length of the spring = 65-60 = 5 cm
We need to calculate the spring constant
Using formula of Hooke's law
We need to calculate the work done
On integration
Hence, The work done in stretching the spring is 0.875 J.
Answer:
Hi, There! my name is Jay And I'm here to help!
<h2>Question</h2>A ____ is a region where jets of gas from young stars impact and heat the gas surrounding the young star.
<h2>Answer</h2>bipolar outflow
Explanation:
A bipolar outflow is a stream of matter in two opposing directions from a object, Most likely a star.
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