Hey can anyone help me out in dis pls!
2 answers:
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The gravitational potential energy of an object is directly proportional to its height above the ground
Explanation:
The gravitational potential energy (GPE) of an object is the amount of energy possessed by the object due to its position in a gravitational field.
Near the Earth's surface, the GPE of an object is given by:
where:
m is the mass of the object
is the acceleration of gravity
h is the heigth of the object measured relative to the ground
As we see from the equation, the GPE is directly proportional to h, the height above the ground. This means that:
- If the object is lifted (h increases), its GPE also increases
- If the object is lowered (h decreases), its GPE also decreases
Learn more about gravitational potential energy here:
#LearnwithBrainly
Answer:
a. 0.000002 m
b. 0.00000182 m
Explanation:
36 cm = 0.36 m
15 cm = 0.15 m
a) We can start by calculating the air-water pressure of the bucket submerged 20m below the water surface:
Suppose air is ideal gas, then if the temperature stays the same, the product of its pressure and volume stays the same
Where P1 = 1.105 Pa is the atmospheric pressure, V_1 is the air volume in the bucket on the suface:
As the pressure increases, the air inside the bucket shrinks. But the crossection area stays constant, so only h, the height of air, decreases:
b) If the temperatures changes, we can still reuse the ideal gas equation above: