The process of changing from one phase of matter to another is a physical matter.
41.5 is the answer that i got. hope this helps!
R(parallel) = product/ sum
50×30/50+30
1500/80
18,75 ohms
Answer:

Explanation:
m = Mass of roller coaster = 2000 kg
r = Radius of loop = 24 m
v = Velocity of roller coaster = 18 m/s
g = Acceleration due to gravity = 
Normal force at the point will be

The force exerted on the track is
.
27.5 because of you divide the 55miles with the time you get your velocity which is the speed.