Answer:
Frequencia = 1.25 Hz
Explanation:
<u>Dados los siguientes datos;</u>
- Velocidad = 50 m/s
- Longitud de onda = 40 metros
Para encontrar la frecuencia de la onda;
Matemáticamente, la velocidad de una onda viene dada por la fórmula;
![Velocidad = Longitud \; de \; onda * Frequencia](https://tex.z-dn.net/?f=%20Velocidad%20%3D%20Longitud%20%5C%3B%20de%20%5C%3B%20onda%20%2A%20Frequencia%20)
Haciendo de la frecuencia el tema de la fórmula, tenemos;
![Frequencia = \frac {Velocidad}{Longitud \; de \; onda}](https://tex.z-dn.net/?f=%20Frequencia%20%3D%20%5Cfrac%20%7BVelocidad%7D%7BLongitud%20%5C%3B%20de%20%5C%3B%20onda%7D%20)
Sustituyendo en la fórmula, tenemos;
![Frequencia = \frac {50}{40}](https://tex.z-dn.net/?f=%20Frequencia%20%3D%20%5Cfrac%20%7B50%7D%7B40%7D%20)
<em>Frequencia = 1.25 Hz</em>
Answer: Electric current
Explanation :
The direction of the magnetic field produced by an electric current will change when the direction of the electric current changes.
For example :
If a current is flowing in a straight length of wire, the magnetic field is described by a concentric circle (using right-hand rule).
Let the field lines are in the clockwise direction and when the direction of current is reversed then the direction of the magnetic field is in anticlockwise direction.
Answer:
The correct option is:
B) Kinetic Energy
Explanation:
We know that if a body is placed at a certain height, it possesses Potential Energy, which is represented by 'mgh'. In this case, when the skydiver is present in the plane, before jumping, he has potential energy as he is at height 'h'.
As Kinetic energy is given as '(1/2)mv²' dependent on velocity of the object, when the skydiver jumps of the plane, his height starts decreasing, which decreases his Potential Energy. As energy can neither be created or destroyed, but is converted to one form or another, all this Potential energy starts to convert into Kinetic energy. As Potential Energy decreases with distance, Kinetic energy increases. Hence, line B represents Kinetic Energy.
C is the right one i think
Answer:
![v_S=\sqrt{2}v_L](https://tex.z-dn.net/?f=v_S%3D%5Csqrt%7B2%7Dv_L)
Explanation:
The acceleration experimented while taking a curve is the centripetal acceleration
. Since
, we have that: ![\frac{v_S^2}{r_S}=\frac{2v_L^2}{r_L}](https://tex.z-dn.net/?f=%5Cfrac%7Bv_S%5E2%7D%7Br_S%7D%3D%5Cfrac%7B2v_L%5E2%7D%7Br_L%7D)
They take the same curve, so we have: ![r_S=r_L=R](https://tex.z-dn.net/?f=r_S%3Dr_L%3DR)
Which means: ![v_S^2=2v_L^2](https://tex.z-dn.net/?f=v_S%5E2%3D2v_L%5E2)
And finally we obtain: ![v_S=\sqrt{2}v_L](https://tex.z-dn.net/?f=v_S%3D%5Csqrt%7B2%7Dv_L)