Because the earth revolves around the sun and the whole earth isn’t always facing the sun it changes that’s why we have night and day and summer and winter etc
Answer:
average force = 385,140 N
Explanation:
from the question we are given the following
mass (m) = 1800 kg
distance of fall (d) = 3 m
driven distance (l) = 14.4 cm = 0.144 m
acceleration due to gravity (g) = 9.8 m/s^{2}
work done = average force x driven distance.....equation 1
and
work done = change in kinetic energy + change in potential energy
work done = (0.5 x m x (v^{2} - u^{2})) + (m x g x (-d-l))
- Initial velocity (u) and final velocity (v) are zero because the pile driver is it rest before it moves to hit the pile and after hitting the pile.
- The changes in length for the potential energy are negative because the pile moves downward
we now have work done = (m x g x (-d-l))...equation 2
now equating the two equations for work done we have
average force x driven distance = (m x g x (-d-l))
average force x 0.144 = 1800 x 9.8 x (-3-0.144)
average force = (1800 x 9.8 x (-3-0.144)) ÷ 0.144
average force = 385,140 N
South it is the same direction the car is already moving
Answer:
2000years
Explanation:
We will either convert the distance to centimeters or speed to meters/second.
Converting distance to centimeters: 100 meters= 100*100centimeters =10000centimeters.
time=distance/speed
t=10000/5=2000 years
The output voltage is 10 times the input voltage.
So the output coil has 10 times as many turns as the input coil has.
That's how transformers work.
Complicated, huh !
10 times 1,000 turns = <em>10,000 turns</em>
