The more twist per foot in a pair of wires, the more resistant the pair will be to cross talk. A cross talk in network planning and design is a disturbance produced by electromagnetic interference beside a circuit or a cable pair. A telecommunication signal interrupts a signal in an adjacent circuit and can source the signals to turn out to be confused and cross over each other.
Complete Question
A small metal sphere, carrying a net charge q1=−2μC, is held in a stationary position by insulating supports. A second small metal sphere, with a net charge of q2= -8μC and mass 1.50g, is projected toward q1. When the two spheres are 0.80m apart, q2 is moving toward q1 with speed 20ms−1. Assume that the two spheres can be treated as point charges. You can ignore the force of gravity.The speed of q2 when the spheres are 0.400m apart is.
Answer:
The value 
Explanation:
From the question we are told that
The charge on the first sphere is 
The charge on the second sphere is 
The mass of the second charge is 
The distance apart is 
The speed of the second sphere is 
Generally the total energy possessed by when 
and 
are separated by 
is mathematically represented
Here KE is the kinetic energy which is mathematically represented as
substituting value
And U is the potential energy which is mathematically represented as
substituting values
So
Generally the total energy possessed by when and are separated by 
is mathematically represented
Here 
is the kinetic energy which is mathematically represented as
substituting value
And 
is the potential energy which is mathematically represented as
substituting values
From the law of energy conservation
So
Answer:
True
Explanation:
Pascal's law says that pressure applied to an enclosed fluid will be transmitted without a change in magnitude to every point of the fluid and to the walls of the container. The pressure at any point in the fluid is equal in all directions.
Iron oxide = small region within a magnet
drop or hammer =man-made magnet
strength decreases rapidly with distance lines of force
Answer:
Final velocity of white ball is 0m/s
Final velocity of black ball is 3.09m/s
Explanation:
An elastic collision is one that conserves internal kinetic energy
An internal kinetic energy is the sum of kinetic energies of objects in the system
Initial kinetic energy of white ball is Vi1 = 3.09m/s
Final kinetic energy of white ball is Vf1 = ?
Initial kinetic energy of black ball is Vi2 = 0m/s
Final kinetic energy of black ball is Vf2 = ?
m1 = 1.49kg mass of white ball
m2 = 1.49kg mass of black ball
The formula to calculate internal kinetic energy is
1/2m1Vf1^2 + 1/2m2Vf2^2 = 1/2m1Vi1^2
Solving the equation
1.Vf1 = (m1 - m2)Vi1/m1+m2
Vf1 = (1.49-1.49)*3.09/1.49+1/49
Vf1 = 0m/s
2. Vf2 = 2m1Vi1/m1+m2
Vf2 = 2*1.49*3.09/1.49+1.49
Vf2 = 3.09m/s
N:B following the general principle of collision when 2 bodies of same masses collide in elastic collision they exchange velocities.
