This happens because of the static electricity.
<u>Explanation:</u>
Static electricity is the type of electricity that is generated in bodies due to friction. In the doorknob, different persons open and close them to open and close the door. This results in the generation of static electricity due to friction.
As the friction increases the static electricity increases. When after a considerable time the doorknob is touched, a mild shock or a crackling sound can be heard from the knob. In winter it’s increases because of the increase in changes of friction.
Answer:
Magnetic field shall be zero at exactly in between the wires.
Explanation:
We can find the magnetic field by biot Savart law as follows
For current carrying wire in positive y direction we have
Similarly for wire carrying current in -y direction we have
Thus the net magnetic field at any point in space is given by
For points with same position vectors from the 2 wires we have a net zero magnetic field. These points are exactly midway between the 2 wires
The formula that can be used to show that the speed of the stone when it hits the ground is 32 m/s is v = u + at
According to equations of motion,
v = u + at
v = Final velocity
u = Initial velocity
t = Time
a = Acceleration due to gravity
t = 3.2 s
a = 10 m / s²
v = 0 + ( 10 * 3.2 )
v = 32 m /s
Equations of motion are used to describe the position of a moving object in a constantly accelerated manner. The position can be described using acceleration, velocity, displacement and time.
Therefore, the formula that can be used to show that the speed of the stone when it hits the ground is 32 m/s is v = u + at
To know more about equations of motion
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I would assume it’s collision