A vector has a size and a direction. The size is called the magnitude of the vector.
Answer:
A thermistor is an electrical device, a thermally sensitive semiconductor resistor, whose resistance changes in response to temperature. Thermistors are made in a variety of ways including thin films (SiC).
Explanation:
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Answer:
See attachment
Explanation:
The diagram attached is a sketch of rays when the object is placed between the lens and focal point. As can be seen, the image in such cases is always on the same side of lens as the object. It is formed beyond the focal point from the lens and is magnified
Explanation:
We have,
Length of a metal rod is 55 cm or 0.55 m
Change in length is 0.2 cm or 0.002 m
It is required to find the change in temperature of a metal rod. The coefficient of linear expansion is given by :

is the change in temperature

So, the change in temperature is 303.03 degrees Celsius.