Answer:
Waves have many properties, including frequency, wavelength, amplitude, timbre, and direction. ... A higher frequency sound is perceived as a higher note, because frequency is the same thing as pitch. The amplitude is how tall the wave is. A higher amplitude sound wave is a louder sound.
Explanation:
The atomic mass of copper is 64.93
Answer:
D
Explanation:
heat is an energy that transfers from a hot body to cold body
Answer:
A) ΔV = 1.237 V
B) K.E = 1.237 eV
Explanation:
B)
The initial kinetic energy of the electron is given by the following formula:
where,
K.E = Kinetic Energy of electron = ?
m = mass of elctron = 9.1 x 10⁻³¹ kg
v = speed of electron = 660000 m/s
Therefore,
K.E = 1.98 x 10⁻¹⁹ J
K.E = (1.98 x 10⁻¹⁹ J)()
<u>K.E = 1.237 eV</u>
A)
The energy applied by the potential difference must be equal to the kinetic energy of the electron, in order to stop it:
where,
e = charge on electron = 1.6 x 10⁻¹⁹ C
Therefore,
<u>ΔV = 1.237 V</u>