Answer:
2.0 kg
Explanation:
For a closed system, the momentum is always conserved. Momentum of an object is given by mv where m is the mass and v is the velocity.
Momentum of the system before the collision is given by:
<h3>p1 + p2 = 1.2*1.2 + x*4.4 (where x is the mass of the 2nd block);</h3>
Momentum of the system after the collision is given by:
Mv where M is the combined mass of the 2 blocks as they stick together and v is the velocity.
<h3>Momentum = (1.2+x)*3.2</h3>
As the momentum is conserved i.e momentum before collision and after collision is the same:
<h3>(1.2+x)*3.2 = 1.2*1.2 + 4.4*x</h3><h3>Evaluate x to get the mass of the 2nd block.</h3>
<span> radio: longitudinal, light: transverse. x rays are produced by voltage and they are more penetrating Gamma Xrays Ultrasound Visible light Infrared Radiowaves. that is the order. colours are different since they absorb part of the colour spectrum & emit the rest </span>
I think it enabled scientists to predict properties of unknown elements.
By the law of reflection which says that the angle of reflection is equal to the angle of incidence, which in other words says, sin x = sin y, it can be said, based on the given that the angle of reflection is also equal to the angle of incidence of 35 degrees
