The efforts applied are 320Nm.
What is work or effort?
Work is when we apply force on body and displacement occur are called work .
W= Fs
where F is force and s is displacement .
displacement is 2-1.6
. = 0.4m
By applying the value in formula
We have given F =800N
W= 800× 0.4
W= 320Nm.
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Potential energy is the answer
Answer:
All the objects experience the same acceleration
Explanation:
According to Newton's law of universal gravitation, we have the gravitational force F given by the relation;
Where;
G = The universal gravitational constant
M₁ = The mass of the Earth
m₂ = The mass of the object in the Earths gravitational field
R = The radius of the Earth
Therefore, we have;
Which gives;
Therefore, based on the above calculation, all three object will have the same acceleration due to gravity, g, when air resistance is ignored.
Given: Velocity of light c = 3.00 x 10⁸ m/s
Frequency f = 7.65 x 10⁷/s
Required: Wavelength λ = ?
Formula: λ = c/f
λ = 3.00 x 10⁸ m/s/7.65 x 10⁷/s
λ = 3.92 m