A student hangs a weight on a newtonmeter. The energy now stored in the spring in the newtonmeter is 4.5 × 10−2 J The student then increases the weight on the newtonmeter by 2.0 N Calculate the total extension of the spring. Spring constant = 400 N/m

what type of charge does it have? negative

c. 7/3

step-by-step explanation:

a rational number is like pi- it is a repeating decimal.

a. is -1.8

b. 2.236068

c. 2.3333333333333333333

d.   is 3

i hope that ! =)

beta is electron from nucleus

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