Four protons (each with mass 1.7 × 10-27 kg and charge 1.6 × 10-19 c) are initially held at the corners of a square that is 6.2 × 10-9 m on a side. they are then released from rest. what is the speed of each proton when the protons are very far apart? (you may assume that the final speed of each proton is small compared to the speed of light.)

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

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

it is a negative acceleration