Answer:
Part a)
k = 588.6 N/m
Part b)
v = 0.7 m/s
Explanation:
As we know that initially block is at rest
now if block is released from rest then it will go down by 10 cm and again comes to rest
so here we have
Part a)
Work done by gravity + work done by spring force = change in kinetic energy




Part b)
Now when spring is stretch by x = 5 cm then the speed of the block is given as

here we have




Answer:
ΔL =0. 000312 m
Explanation:
Given that
At room temperature ( T = 25 ∘C) ,L= 1 m

So the length at 13.0 ∘C above room temperature


L=1.000312 m
So the change in length
ΔL = 1.000312 - 1.0000 m
ΔL =0. 000312 m
<em>Hey There!!</em>
<em>I think the answer is:</em>
<em>B). </em><em>Mars has less mass than Earth. </em>
Explanation:
<em>Because, due to the law of gravity, or gravitation, by which all things with mass around the planet Mars are brought towards it. It is weaker than Earth's gravity due to the planet's smaller mass.</em>
<em>P.S </em><em>Tell me if this is wrong....</em>
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<em>(^∀^●)ノシ</em>
No, because an atom consists of two main parts and three subatomic particles - protons, neutrons, electrons. Each one is smaller than an atom, therefore they are subatomic particles. An atom only requires protons and electrons to be an atom - Hydrogen has 1 proton and 1 electron. Neutrons DO NOT affect the overall charge of the atom, and only increase the atomic mass.