Use Fnet=ma. Apply it to the vertical components of all the forces acting on the ball and since tension is the same on both wires you should be able to factor it out and solve for it. Picture below
Answer: The value of x is -6.
Explanation:
To calculate the value of 'x', we need to solve each function happening inthe equation.
The equation provided to us is 
To solve this, we will multiply 4x with 2 and then subtract the like terms and finally, we evaluate the value of 'x'.

Hence, the value of x will be -6.
A they all move the same speed in a vacuum this is because in a the photons don't bump in to anything
Answer:
Their velocity is 0m/s because the first box was only 10 kg and the second box was double the weight
Answer:
A negatively ionized lithium paste is a conductor.
Explanation:
A conductor is a material that conducts electricity. In other words, a conductor has little resistance to the movement of electric charge or electrons when an electric field is applied.
Insulating materials for electricity are those that offer a certain resistance to the movement of electrons or electric current. In other words, an electrical insulator is a material with a low capacity for conducting electricity.
The best conductors of electric current are metals due to the free electron clouds that favor the circulation of electric current through them.
So, <u><em>a negatively ionized lithium paste is a conductor. </em></u>