Answer:
45C in a minute is
45/60 C in a second
.75 C in a second is 3/4 of an ampere.
Explanation:
distance d = 5 km = 5 x 1000 m = 5000 m
time taken = 25 minute = 25 x 60 sec = 1500 sec
average velocity V = d/t
V = 5000/1500
V = 3.33 m/s towards east
Answer:
Explanation:
Let m be the mass of each car
mass of three cars = 3m
Kinetic energy of 3 coupled cars = 1/2 x 3m x 28²
= 1176 m
mass of 4 coupled cars = 4m
Its velocity v = 3m x 28 / 4m ( using conservation of momentum law )
= 21 m /s
Kinetic energy of 4m mass
= 1/2 x 4m x 21²
= 882 m
Loss of energy
= 1176 m - 882 m = 294 m
percentage of loss
=( 294 / 1176 ) x 100
= 25 %
This energy appears in the form of sound , heat etc on collision .
If someone upsets you ,it is your responsibility to make changes so that they don't do it again.
The statement is true.
As by making changes you don't give them any chances of repeating that thing.
HOPE IT HELPS!!!!
PLEASE MARK BRAINLIEST!!!!
<span>PE = m * g * h
PE = 60 * 9.8 * 4
PE = 2352 J
Power = E/t
Power = PE/t
Power = 2352/4.2
Power = 560 Watt</span>
