I honestly believe it is B because its the only one that seems unnecessary.
Answer:
A voltage-controlled resistor (VCR) is a three-terminal active device with one input port and two output ports. The input-port voltage controls the value of the resistor between the output ports. VCRs are most often built with field-effect transistors (FETs). Two types of FETs are often used: the JFET and the MOSFET.
Info from Wikipedia :)
hope this helps :D
Answer:
I would have to go with A, or maybe....yea A
Answer:
88.2J
Explanation:
Given parameters:
Mass of book = 3kg
Height of shelf = 3m
Unknown:
Potential energy = ?
Solution:
The potential energy of a body is the energy due to the position of that body.
It can be mathematically calculated as;
P.E = mgh
m is the mass of the body
g is the acceleration due to gravity = 9.8m/s²
h is the height
Now insert the parameters and solve;
P.E = 3 x 9.8 x 3 = 88.2J
Answer : The correct option is (A) " inverse plot, ".
Explanation:
The atmospheric density is defined as the mass of the per unit volume of the atmosphere of earth. It is measured in .
The atmospheric density on a certain planet is found to decrease as altitude increases. So, there is an inverse relationship between the density and the altitude.
From the attached graph, it is clear that there will an inverse plot for altitude vs atmospheric density.
Let point M in the graph shows 1,291 km. So, density at point M should be in between and less than
So, the density can be
Out of given options, the correct one must be (A) because the point M lies closer to point A.
So, correct option is (A) " inverse plot, ".