Answer:
a. Potential energy of the sled is increased when height of sled is increased.
b. Potential energy of the sled is increased when height of sled is increased.
c. P.E₂₀ = 2 P.E₁₀
d. P.E₂₀₀ = 2 P.E₁₀₀
Explanation:
The potential energy of the sled can be given by the following:
where,
m = mass of sled
g = acceleration due to gravity
h = height of sled
a.
It is clear from the formula that potential energy of sled is directly proportional to the height of sled.
<u>Therefore, potential energy of the sled is increased when height of sled is increased.</u>
b.
It is clear from the formula that potential energy of sled is directly proportional to the mass of sled.
<u>Therefore, potential energy of the sled is increased when mass of sled is increased.</u>
<u></u>
c.
<u>P.E₂₀ = 2 P.E₁₀</u>
<u></u>
d.
<u>P.E₂₀₀ = 2 P.E₁₀₀</u>
Answer:
0.05 V/m
Explanation:
For a uniform electric field, electric field strength and potential difference are related by
where
E is the electric field strength
is the potential difference
d is the distance between the two points
Here we have
So, the electric field strength is
The height of a person is the dependent variable because it depends on the years.
Answer:
D.
Explanation:
Red light has wavelengths around 620 to 750 nm.