Explanation:
Gravitational potential energy
= mgh = (45kg)(9.81N/kg)(2m) = 882J.
The spring constant determines how far the spring will stretch for a given applied force: <span>F=kx→k=<span>Fx</span></span><span>. If we place the same mass on the two springs, which means we have placed the same force on them, the one that stretches </span>least<span> has the largest spring constant.
Hope this helps!
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Answer:
dissolving is classified as a physical change because it can be reversed back to its original form
explanation:
Dissolving is an example of a reversible change. For example, when salt is mixed with water it disappears because it dissolves in the water to make salty water. But we can get the salt can back again by boiling off the water. That leaves the salt behind.
N(CH₃COOH)=c₁v₁=c₂v₂
c₁=2.5 mol/L
c₂=0.50 mol/L
v₁-?
v₂=100.0 mL=0.1000L
v₁=c₂v₂/c₁
v₁=0.50*0.1000/2.5=0.02 L = 20 mL