Respuesta:
2 × 10⁴ V
Explicación:
Paso 1: Información provista
- Carga transportada (q): 4 nC
- Trabajo realizado (W): 7 × 10⁻⁵ J
Paso 2: Convertir q a Coulomb
Usaremos el factor de conversión 1 C = 10⁹ nC.
4 nC × 1 C/10⁹ nC = 4 × 10⁻⁹ C
Paso 3: Calcular el potencial eléctrico (V) de la esfera
Usaremos la siguiente fórmula.
V = W/q
V = 7 × 10⁻⁵ J/4 × 10⁻⁹ C = 2 × 10⁴ V
Answer: C
Explanation:
The flux due to the loop always opposes the change in the flux due to the external magnetic field. This occurs as a result of the current that is induced in a coil (due to a magnetic flux change through the coil) which will always be in such that it opposes the change that caused it. ... Any induced current in a coil will result in a magnetic flux that is opposite to the original changing flux. This was what Faraday was explaining in the law of Induction
Answer:
B) The ratio of the speed of sound in rod A to the speed of sound in rod B is 1.
Explanation:
Applying Hooke's law,
F = -kx
Where,
F = force
k = spring stiffness
x = length
Element A
F/7k = x
Since, mass = F/A
Ma = 7Mb
Therefore,
7Mb/A*7kb = x
Mb/A*k = x
Element B
F/k = x
Since, mass = F/A
Mb = Mb
Therefore,
Mb/A*kb = x
Ratio of mass of element A and element B
Mb/A*kb : Mb/A*kb
1 : 1
The lasers are made from stacking light waves that add together into a larger wave in a process known as constructive interference. This happens only when waves would meet while they are traveling in the same medium. Constructive interference happens at any part of the medium where two waves moves in the same direction. When these waves would meet, they add up and make a larger wave. It is the interference of at leat two waves which produces a single amplitude where it is equal to the sum of the amplitudes of each wave that interfered. The other type is the destructive intereference where the result is a smaller wave.<span />