Why does the same note played on different instruments not sound the same?
1 answer:
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To solve this problem we will apply the concepts related to energy conservation. Here we will use the conservation between the potential gravitational energy and the kinetic energy to determine the velocity of this escape. The gravitational potential energy can be expressed as,
The kinetic energy can be written as,
Where,
Gravitational Universal Constant
Mass of Earth
Height
Radius of Earth
From the conservation of energy:
Rearranging to find the velocity,
Escape velocity at a certain height from the earth
If the height of the satellite from the earth is h, then the total distance would be the radius of the earth and the eight,
Replacing the values we have that
Therefore the escape velocity is 3.6km/s
Answer:
60 W
Explanation:
The work done in lifting the object is given by:
where
F = 30.0 N is the weight of the object
d = 10.0 m is the displacement covered by the object
Using the formula,
Now we can calculate the power, which is given by
where
W = 300 J is the work done
t = 5.00 s is the time interval
Substituting,