Because cars and buildings are small in mass and so exert very low gravitational fore which is dominated by the large gravitational force of earth
An example of hydro energy is: C. a hydroelectric dam.
The minimum necessary height of the IV bag above the position of the needle is 0.37 m.
<h3> Minimum necessary height</h3>
The minimum necessary height of the IV bag above the position of the needle is calculated as follows;
P = ρgh
where;
- ρ is density = 1.308 kg/L = 1308 kg/m³
- g is acceleration due to gravity = 9.8 m/s²
- p is pressure = 35.7 mmHg = 4759.609 Pa
- h is height, (m) = ?
h = P/ρg
h = (4759.609) / (9.8 x 1308)
h = 0.37 m
Thus, the minimum necessary height of the IV bag above the position of the needle is 0.37 m.
Learn more about pressure here: brainly.com/question/25736513
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Depends on your personal frame of reference.
Compared to gamma rays -- True
Compared to radio waves -- False
Hubble noticed that the galaxies were moving away from us, which meant the universe was expanding.
This is why constellations change over time. In some years, the Big Dipper won't actually look like a dipper anymore.