Answer:
-0.4454 Joules
Explanation:
m = Mass of block = 2 kg
h = Height of extension = 17 cm = x
g = Acceleration due to gravity = 9.81 m/s²
Potential energy of the spring

The kinetic energy of the spring

In this system as the potential and kinetic energy is conserved from work energy equivalence we get

The work done by friction is -0.4454 Joules
Answer:
You bite it then you chew the piece you bit off. :)
Explanation:
Answer:
c) Water molecules melt into gas molecules.
The answer for this would be B!!
<u>Answer:</u> 0.774 g/cm^3
<u>Explanation:</u>
Density is measured in g/cm^3
480g / 620cm^3 = 0.774 g/cm^3
Does this help? Sorry if not.