Answer:
D. Friction and air resistance created heat on his trip up the hill.
Explanation:
Energy transformation from one form to another is not 100% efficient. This is the postulate of the first law of thermodynamics.
Most of the energy transformation is not purely 100%.
When energy is transformed, some are usually wasted.
- In this case, in moving from bottom up, Superman produced some heat and encountered air resistance.
- To reach the top, he must have overcome the resistance and produce enough heat to power him through.
- This reduces the amount of potential energy that should have been the same as the kinetic energy down below.
Answer:
Elastic potential energy is the stored energy of a compressible or stretchable object like a spring or rubber band or molecule. Elastic potential energy is equal to the force times the distance of movement. Elastic potential energy = force x distance of displacement. W = Fs. W = elastic potential energy, in Joules.
Explanation:
Elastic Potential Energy Formula - SoftSchools
F=ma
60=30.a
60/30=30.a/30
2=a
The direction of the deflection on the screen caused by the vertical component of the Earth's magnetic field, taken as 20.0uT down is 6.3445*10^-16
Given,
E = Accelerating voltage = 2.47×10³ V
m = Mass of electron
Distance electron travels = 33.5 cm = 0.335 cm
By using the formula,
E = mv^2 /2
v = 
v = 
v = 29455256.08671 m/s
Deflection by Earth's Gravity
Δ = g s^2/v^2 / 2
Δ = 9.81 
/ 2
Δ = 6.3445 * 10^-16 m
Therefore,
Magnitude of the direction on the screen caused by the Earth's Magnetic field is 6.3445*10-16 m
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