Answer:
0.247 μC
Explanation:
As both sphere will be at the same level at wquilibrium, the direction of the electric force will be on the x axis. As you can see in the picture below, the x component of the tension of the string of any of the spheres should be equal to the electric force of repulsion. And its y component will be equal to the weight of one sphere. We can use trigonometry to find the components of the tensions:
The electric force is given by the expression:
In equilibrium, the distance between the spheres will be equal to 2 times the length of the string times sin(50):
And k is the coulomb constan equal to 9 *10^9 N*m^2/C^2. q1 y q2 is the charge of each particle, in this case, they are equal.
O 0.247 μC
Answer:
<h3>10.0m</h3>
Explanation:
The displacement of the dog is the distance moved in a specified direction. It will be gotten using pythagoras theorem as shown;
d² = 8²+6²
d² =64+36
d² = 100
square root both sides
√d² = √100
d = 10m
Hence the displacement of the dog to the nearest tenth is 10.0m
Answer:
Explanation:
Let the mass of the other car is "m" and its kinetic energy is
now the mass of the first car is two and half times and its kinetic energy is half that of other car
so we will have
now speed of both cars is increased by value of 9 m/s
so now we will have same kinetic energy for both cars
so speed of first car is
Answer:
Reaction force
Explanation:
A ball is thrown against a wall: The ball puts a force on the wall (action force), and the wall puts a force on the ball (reaction force) so the ball bounces off
Answer:
E cinetica = 140.24 [J] "unidades en Joules"
Explanation:
Para poder solucionar este problema debemos tener un dato aproximado de la masa de la pelota de beisbol, ya que en el problema este dato no fue dado, realizamos una busqueda por internet y encontramos que la masa de una pelota de beisbol es de aproximadamente m = 142 [gr].
Datos iniciales:
m = masa = 0.142 [kg]
v = velocidad = 160 [km/h]
debemos convertir de kilómetros por hora a metros por segundo.
Sabemos que la energia cinetica se define por medio de la siguiente ecuacion: