Tension pointing up at the top
Weight pointing down at the bottom
If there is someone standing inside the elevator, there will be a normal reaction force pointing down at the bottom.
Because we can send high voltage, low current which is more efficient since large amounts of current in the line causes power inefficiencies. AC can be transformed locally to high current lower voltage
The answer is both.
For kinetic energy:
KE = 1/2*m*v^2 = 0.5*20,000 grams*5 = 50,000 J
For gravitational potential energy:
Pe = mgh = 20,000 grams*9.81 m/s^2*2 m = 392.2 J
Answer:
Explanation:
a.) hypermetropia is the reason for his problem
b.)Image is formed farther from the near point
c.) defect is corrected by convex lens
