Answer:
B. 22,22,23,23,22,22,23
Explanation:
The standard deviation is a measure of dispersion or variability of a data set. In order to determine the data set that has the smallest standard deviation, we shall investigate on the ranges of the data sets given. The range of a data set is simply the difference between the maximum and minimum values in a data set. A data set that has a smaller range also has a smaller standard deviation.
From the alternatives given, the data set given by alternative B has the smallest range and consequently the smallest standard deviation.
The maximum value is 23 while the minimum is 22. The range is 1.
Explanation:
speed of curved path=under root of Mew and gravity
smooth surface Mew=0
so under root of 0×g
=0
Answer:
copper
Explanation:
As you can see, out of the more common metals, copper and aluminum have the highest thermal conductivity while steel and bronze have the lowest.
Answer:
e. The amount of the charge decreases, because the capacitance decreases.
Explanation:
The capacitance of a parallel plate capacitor is given by the formula:
where 
is the permittivity of the medium between the plates, A the area of the plates and d the separation between them, so <em>if we increase the separation d the capacitance C will decrease</em>.
The relationship between the charge on the plate Q and the voltage applied V (the potential difference between the plates) is given by:
This means that if while <em>keeping the potential difference between the plates V constant the capacitance C decreases then the charge Q will decrease as well</em>.
