Q4: In the case of telescopes, we focus light from infinitely far away to make an image. One can think of each point of an image being made by the focusing of a separate beam. If we were
going to focus the light reflected by the moon on a screen using the lens in Q1-3, where should
we place the screen to make an in focus image? Explain your reasoning.

beta is electron from nucleus

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

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles