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At Korona100 I don’t think it’s 10, becz I remember having this question on my test/ quiz but I got it incorrect so yeah.
Explanation:
Pressure = force / area
P = (68 kg × 9.8 m/s²) / (2 × (0.04 m)²)
P = 208,250 Pa
Converting to psi:
P = 208,250 N/m² × (0.225 lbf/N) × (0.0254 m/in)²
P = 30.2 psi
Answer:
the statement given is False.
Explanation:
The pressure is defined by
P = F / A
The force of the air is its weight,
P = W_air / A
The weight of an air column on us depends on the energy of the molecules that is related to the temperature
E = 3/2 K T
When the air is warmer it has more energy so the molecules can move more distance and therefore the average density of the gas decreases, as the density decreases, the weight of the column on us also decreases, therefore the pressure low.
The correct statement is: When the air is hotter it has less pressure than when the air is cold.
It is summary the statement given is False
Answer:
the height h is 1.95 m above the floor
Explanation:
m = 2.0 kilogram
Ep = 39 J
g = 10 m/s²
h = ?
Ep = mgh
h = Ep ÷ mg
h = 39 ÷ (2×10)
h = 39÷20
h = 1.95 m
