Impulse is also known as the change in momentum of an object. Momentum has an equation of,
momentum = m x v
where m is mass and v is velocity. Therefore, impulse has a formula which is,
impulse = m x (v₂ - v₁)
Substituting the known values in the equation,
impulse = 975 kg x (3 m/s - 0.5 m/s)
impulse = 2437.5 kg m/s
Answer:
Explanation:
Given
de Broglie wavelength = 0.20nm
Required
Determine the speed (v)
The speed is calculated using the following formula;
Where
Substitute these values in the above formula
-----------------------------------------------------
Convert 0.2nm to metre (m)
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Multiply both sides by v
Apply law of indices
Divide both sides by
Apply law of indices
Hence;
The velocity is
Answer:
Temperature T2 = 237.5 K
Explanation:
Given:
Volume = 35 ml
T1 = 285 k
P1 = 150 pa
P2 = 125 pa
Find:
Temperature T2
Computation:
P1V/T1 = P2V/T2
150(35) / 285 = 125(35) / T2
Temperature T2 = 237.5 K
Example: Increasing the tension in A string causes the speed of waves on the string to increase. Since the wavelengths of the standing waves remains constant, this results in a larger frequency of oscillations in the string, which we percieve as a higher pitch when the string vibrates the air.