A. An electron has far less mass than either a proton or neutron.
Answer:
the total travled is 2.75
Explanation:
because if you divide 110 by 40 you get 2.75
5 cm - 53 degrees
= 53°
6hrs
t = time taken until the trains pass by each other/hrs
38 + 54 = 92
Use time = distance/speed:
t = 552/92 = 6
