Answer:
they stick together when they get close
No matter what galaxy you happen to be in all the other galaxies our universe the region around Earth from which light has had time to reach us
One
All objects, every one, as long as the object is not at absolute zero (not very many objects are -- like no common object) emit electromagnetic radiation because they possess thermal (heat) energy.
The answer, surprisingly, is A.
Two
This is just an example of Snells law. The angles are with the normal.
Index of Refraction = sin(input angle) / sin(outgoing angle)
Index of Refraction = sin(angle incidence)/sin(angle of refraction)
Index of Refraction = Sin (36)/Sin(27.5)
Index = 1.28 (rounded)
Initial momentum of the Play-doh: 0.0600 x 2.60 = 0.156 kg/m/s
Total mass of the block and play-doh: 0.38 + 0.0600 = 0.44 kg.
Final momentum is mass x velocity = 0.44v
V = Initial momentum / mass
V = 0.156 / 0.44 = 0.3545 m/s
Work done by spring is equal to the Kinetic enrgy.
Work Done by spring = 1/2 *28.0 * distance^2 = 14 * d^2
KE = 1/2 * 0.44* 0.3545^2
set to equal each other:
14 * d^2 = 0.22 *0.12567
Solve for d:
d = √(0.22*0.12567)/14
d = 0.44 meters = 4.4cm
