Pressure at a depth of 20m below sea of 1020 kg/m3 is ( Patm = 1.01 x 105 Pa)
A. 3 x 103 P
B. 1.01 x 105 pa
C. 1.99 x 105 Pa
D. None

i don't know, you need to give me some answers.

explanation:

what type of charge does it have? negative

d is the correct answer

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge