<span>The metric
system is the oldest name for the international system of units. The answer is <u>a.
True. </u>SI unit or the international systems of units are based on seven
basic units; the meter, kilogram, second, ampere, Kelvin, candela and mole. All
of these basic units are divided into multiples by a power of ten. For example
in meters, 1 meter is equal to: 1000 millimeter, 100 centimeter, 10 decimeter,
0.1 decameter, 0.01 hectometer, 0.001 kilometer and so on and so forth.</span>
Answer:
The current through the tube is 73.39A.
Explanation:
The relationship between the resistivity , the electric field , and the current density is given by
This equation can be solved for to get:
Since the current is
Now, for the tube of mercury , , and the area is ; therefore,
Hence, the current through the mercury tube is 73.39A.
If it makes 50 complete back-and-forth wiggles in 1 second, then its frequency is <em>50 Hz</em>.
If there are x red marbles initially then 1/5 is a probability in it's lowest form cancelled down from:
<span>1/5 = x/5x </span>
<span>so there are 5x total marbles, x red and 4x blue. </span>
<span>Add 5 new red and the new probability is: </span>
<span>(x+5)/(5x+5) = 1/3 </span>
<span>3x+15 = 5x+5 </span>
<span>2x = 10 </span>
<span>originally there were: </span>
<span>x = 5 red </span>
<span>4x = 20 blue </span>
<span>marbles. </span>
<span>*************** </span>
<span>there are now: </span>
<span>x+5 = 10 red </span>
<span>4x = 20 blue </span>
<span>marbles</span>