Protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge).
Explanation:
As w = 2000π
2πf= 2000π
f= 1000Hz
speed = wavelength × f= w/k
wavelength = 2000π/ (0.5× 1000)
= 4π
or
12.57
Answer:
independent variable
Explanation:
The independent variable belongs on the x-axis of the graph and the dependent variable belongs on the y-axis
Answer:
The longer the cord, the lower the illumination
Explanation:
The illumination provided by the light bulb will be reduced as the length of the extension cord increases. This is because the resistance provided by the wire increases with its length.
Long wires have more electrical resistance than shorter ones.
Let us consider this formula:
Resistance =
From this formula, we can see that as the length increases, the resistance to current flow offered by the wire increases also provided the resistivity and cross-sectional area of the wire remain constant. As a result of this, the illumination will drop.
Answer:
Force = 4N
Explanation:
Workdone = force × distance
Force = Workdone/distance
Force =160/40 = 4N