Th answer is "electric attraction is a force that can act at a distance."
1 answer:
You might be interested in
Answer:
Choice B: The current decreases.
Explanation:
The resistance of a conductor is proportional to its length when radius and resistivity stays the same. The resistance of the longer filament will be greater than the resistance of the initial one.
For Ohmic conductors,
,
where
is the current through the conductor,
is the voltage across the conductor, and
is the resistance of the conductor.
Voltage here stays the same. Increasing the resistance of the conductor will reduce the current.
The filament might heat up over time. The filament might not be an ohmic conductor. Still, a similar trend shall exist. Resistance will be greater in the longer filament, and current will decrease.
Answer:
Explanation:
If you are asking for how much a cubic meter of iron would weight, you need to find its density.
The density of iron taken from the periodic table is , therefore a single cubic meter would weight 7870 kg, which written in scientific notation would be
Answer:
The width is
Explanation:
From the question we are told that
The width of the slit is
The wavelength of the light is
The position of the screen is
Generally angle at which the first minimum of the interference pattern the light occurs is mathematically represented as
Where m which is the order of the interference is 1
substituting values
Now the width of first minimum of the interference pattern is mathematically evaluated as
substituting values
Now the width of the pattern's central maximum is mathematically evaluated as
substituting values