20.7 volts. The mass of an electron is 9.1 x 10⁻³¹ kg, and its wavelength is 0.27 x 10⁻⁹ m. The velocity of the electron can be determined using de Broglie's equation λ mv = h. Substituting the known values, we arrive at v = 2.7 x 10⁶ m/s. The potential difference through which the electron accelerates is noted, with the charge on an electron being 1.6 x 10⁻¹⁹ C. According to the conservation of energy, (0.5) mv² = q ΔV leads to ΔV = 20.7 volts.
Answer:
Explanation:
Provided:
mass of the steel ball 
initial velocity of the ball 
Final velocity of the ball 
(moving upwards)
The impulse given is determined by the change in the momentum of the object.
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Thus, the magnitude of the Impulse is 4 N-s.
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The frequency of a sound remains constant as it departs from the source. It does not alter.
The voices of swimmers do not modify in frequency when transitioning to or from the water. Only their speed and wavelength vary.
