matter and radiation

Question 1

what is the charge of a proton?

Answer 1

1.60x10^-27

Question 2

What is the charge of an electron?

Answer 2

-1.60x10^-27

Question 3

what is the mass of proton and neutron?

Answer 3

1.67x10^-27

Question 4

what is the mass of an electron?

Answer 4

9.11x10^-31

Question 5

what is a specific charge

Answer 5

charge over mass

Question 6

what is the value of planks constant?

Answer 6

H= 6.63x10^-34

Question 7

the equation for photon energy

Answer 7

E= hf

Question 8

what is this equation for E=hf

Answer 8

Photon energy

Question 9

what is the equation for photon power

Answer 9

E=nhf

Question 10

What is n in the equation E=nhf?

Answer 10

n = phtons per second

Question 11

what is this equation for E=nhf

Answer 11

Photon Power

Question 12

what happens when matter and its antimatter meets

Answer 12

annihilation
converted into radiation.
two photons are produced to keep the momentum = 0

Question 13

what is pair production

Answer 13

photon creates a particle and its corresponding antiparticle.

Question 14

The equation for the minimum energy needed for pair-production.

Answer 14

hf = 2E
E = rest energy of a particle.

Question 15

what is electrom capture

Answer 15

electron capture is when a proton captures a electron and becomes a neutron while the elctron becomes a neutrino.