Answer:
T2 = 1680,4 days
Explanation:
Kepplers law:
For Earth:
T1 = 365 days ; a1 = 149 597 870 700 m
For Ceres:
T2 = ? days ; a1 =
Then:
Replacing values:
T2 = 1680,4 days
An object moves in a circle. If the mass is tripled, the speed halved, and the radius unchanged then the centripetal force must
change by a factor of:
3/2
3/4
9/4
6
12
3/2
3/4
9/4
6
12
2 answers:
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As per the question there are two ohmic devices.
The first ohmic device is a good conductor and the second one is a good insulator.
As per Ohm's law the current flowing through a conductor is directly proportional to the potential difference maintained across the two ends of a conductor at constant temperature and pressure. If V is the potential and I is the current flow through these Ohmic devices,then mathematically it can be written as-
V∝ I [ at constant temperature and pressure]
⇒V= IR
Here R is the proportionality constant called resistance of the material.
Hence the resistance R is calculated as -
Now a graph is plotted taking potential V on X-axis and current I along Y- axis.
The graph will be a straight line for conductor and will be a curve depending on the type of insulator.
The slope of this graph will give the resistance of the material.
An insulator is a substance through which current flow is very low as its resistance is very high.Hence the slope of the V-I curve is very large.
A conductor is that substance through which current is flown easily as the resistance of conductor is very low.Hence the slope of V-I curve is smaller,