Answer:
Mass Kinetic Energy and Jules
Explanation:
The train in question is big and heavy and a car is decently heavy but say a train moving at 55 mph can plow through a car and a car driving at 55mph driving at a train will be stopped dead in its tracks. This is because newtons laws of motion specifically an object in motion will stay in motion unless its opposed. The train also has a payload behind it meaning it hurts with force while a car doesn't have to much mass behind it. The train takes loner to stop for as it's acceleration as well as it's deceleration are very slow because its huge and takes a lot of force to stop it while a car is very centralized and compact when it comes to weight and its brakes are usually effective at stopping at 55 mph in about 2 to 6 seconds while a train might stay moving for a good 35 seconds. The force behind the train is immense for as even if the wheels don't spin at all the train will still move since the force behind it is great and a cars tires have a lot of grip and not a lot mass which plays into the force the car has so it can stop simply.
Is that a question out of curiosity?
Answer:Technician A
Explanation:
Technician A is right as a 12 v battery contains 6 cells of 2.2 volts and
The size of the battery plates and amount of electrolyte decides the amount of charge lead acid batteries can store for example thus more plates a cell does not mean more voltage it creates.
The four rocky planets are extremely small compared to the gas giants.
Answer:
q = Q/2
option c is correct
Explanation:
given data
charge = Q
distance r = 1 m
charge = q
to find out
what should q be
solution
we have given charge q is remove so
q1 = Q-q
q2 = q
we know by coulombs law force
force = kq1q2 / r² .............1
put here value and we know k is constant
F = k (Q-q) q / 1
now take derivative charge q and put = 0
dF/dq = k d(Q-q)q / dq
so k (Q-q)q =0
Q = 2q
q = Q/2
so option c is correct
