It is called a photon i believe
Sorry, This is one of the questions i wouldn't know, Hope you find it though
Answer:
(a)
(b)
(c) 4.43 m/s
(d) 2 m/s
Explanation:
Using the attached image, point 4 is point A
Since potential energy PE=mgh where m is mass, g is acceleration due to gravity and h is height.
The height is 100cm equivalent to 1 m
Substituting 2g equivalent to 0.002 Kg for m, for g and 1 m for h we obtain
(b)
Kinetic energy is given by
KE=0.5mv^{2} where v is the velocity, m is mass and KE is kinetic energy
Substituting m for 0.002 Kg and
(c)
As already illustrated in part b
(d)
From the law of conservation of energy
Energy at point A equals energy at point C
Answer:
See Explanation
Explanation:
The density of a substance is an intrinsic property. Intrinsic properties are properties that are characteristic of a material. It does not depend on the amount of substance present.
Since density is an intrinsic or intensive property, If you cut a piece of gold in half, the density of each piece will still be 19.32 g/cm 3 because density does not depend on the size of the gold piece.
"Photoelectric emission" releases gamma rays
In short, Your Answer would be Option D
Hope this helps!