If you're holding the apple at your waist, lift it to your mouth.
Potential energy relative to any level is proportional to its height
above that level. Increase that height, and you've increased the
potential energy.
Since energy is conserved ... it never magically appears or
disappears ... you need to tell where that extra energy for the
apple came from.
It's exactly the work you did ... the force of your muscles acting
through the distance you raised the apple ... that became the
additional potential energy that the apple gained.
B is the right answer. Multiply numbers you get the answer
Answer: 1.91*10^8 N/m²
Explanation:
Given
Radius of the steel, R = 10 mm = 0.01 m
Length of the steel, L = 80 cm = 0.8 m
Force applied on the steel, F = 60 kN
Stress on the rod, = ?
Area of the rod, A = πr²
A = 3.142 * 0.01²
A = 0.0003142
Stress = Force applied on the steel/Area of the steel
Stress = F/A
Stress = 60*10^3 / 0.0003142
Stress = 1.91*10^8 N/m²
From the calculations above, we can therefore say, the stress on the rod is 1.91*10^8 N/m²
ANSWER: D
EXPLAINATION:
All the other answers are alike so this is the only different one
MARK ME BRAINLIEST PLEASE
Answer:
Explanation:
Given that
Stored energy E
a)
We know that stored energy in capacitor given as
Given that
C= 0.02 F
b)
Electric filed E = 9 x 10^6 V/m
We know that
V = E .d
d=1.11 mm
We know that
This is area area of the plates.
