A wave with a greater amplitude will transfer . . . . \
1 answer:
Answer:
More energy
Explanation:
The amount of energy carried by a wave is related to the amplitude of the wave itself. In particular, the amount of energy carried by the wave is proportional to the square of the amplitude of the wave:
where
E is the energy
A is the amplitude
This means, for instance, that if the amplitude of a wave is doubled, the energy it carries increases by a factor 4.
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A group of skydiver are riding in a helicopter up to the spot form which they will jump. As they ride upwards. their gravitational potential energy increases.
Answer: Option A
<u>Explanation:</u>
Gravitational potential energy refers exerted energy on any object rising from the surface of Earth. It is the measurement of potential energy of any object depending on its position.
We can also define gravitational potential energy as the amount of energy required to raise an object to certain level from the surface of Earth or the work done to raise the object to some position from a position of reference. The formula for calculating the gravitational potential energy is
Here, m is the object's mass, g -the acceleration and - the object's distance from the Earth's surface.
So from this formula, it can be confirmed that if the helicopter carrying skydivers are made to ride upwards, then their gravitational potential energy will increase as the distance of helicopter from the Earth's surface is increased on riding the helicopter upwards.
Answer:
D) Q/2
Explanation:
The amount of charge on a capacitor is given by:
Q = CV
where
C is the capacitance
V is the voltage
The capacitance of a parallel-plate capacitor is given by
where
is the vacuum permittivity
A is the area of the plates
d is the separation between the plates
Substituting the last formula into the first one, we can write
In this problem, the two plates are pulled apart to twice their original separation, so
d' = 2d
While the voltage V is kept constant. Therefore, the new charge stored in the capacitor will be