To solve this problem it is necessary to apply the concepts concerning conservation of the linear momentum as well as the equations of energy acquisition for springs.

From the definition of conservation of linear momentum we have to,

Where,

Final velocity

Mass of the bullet

Mass of the block

Initial velocity of the bullet

initial velocity of the block

The block does not have initial speed because it is at rest, then replacing we have to,

Re-arrange to find

Now applying the energy conservation equations we have that the potential and kinetic energy of the spring must be maintained in the way

If the spring is compressed, then the velocity becomes zero. Here the kinetic energy is zero and the spring potential energy as follow,

Re-arrange to find x,

Therefore the spring is compressed around to 0.1913m

**Answer:**

Gravity

**Explanation:**

Gravity pulls things down to earth and it is a force

Calculating Kinetic Energy<span><span>Write the equation. The formula for calculating kinetic energy (KE) is KE = 0.5 x mv2. ...</span>Plug the mass and velocity into the equation. If you don't know the mass or velocity of the object, then you'll have to calculate it. ...<span>Solve the equation.</span></span>

Answer:

V2 = P1×V1/P2

V2 = 4.4cm3

Explanation:

Applying Boyle's law

P1×V1 = P2×V2

V2 = P1×V1/P2

Where;

V1 = initial volume of air bubble = 2.0cm3

V2 = final volume of air bubble

P1 = initial pressure of air bubble = 1.2 + 1 atm = 2.2 atm

(Absolute pressure = guage pressure + atmospheric pressure)

P2 = final pressure of air bubble = 1 atm

V2 = 2.0× 2.2/1.0

V2 = 4.4cm3

The exchange particles you are talking about are probably the gauge bosons. They are elementary bosons, meaning that they are elementary particles making part of the standard model and they have integer spin. There are four of them: The photon, the gluon, the W+ and W- bosons and the Z boson. The photon basically is the particle of light being an excitation, if you will, of the electromagnetic field so that is mediates the electromagnetic force. The only thing that differs from long range photons (light) is that they are what is called virtual photons but that is for another subject. Then you have the gluons that come in 8 varieties and their role is to interchange the color charge in between quarks so that it mediates the strong nuclear force, the force that keeps quarks bounded into protons. And then finally there are the W+, W- and Z bosons that mediates this time, the weak nulear force, the force that allows protons to coexist in the nucleus of atoms with neutrons. I hope that helped you, but as i usually do, i tried to simplify my answer beacause i could have written a lot mor about that!