We have to wonder what substance you're working with. Under normal, human environmental conditions, there are almost no substances that freeze and boil at the same temperature.
However, EVERY substance has SOME temperature, at some pressure, at which it "sublimes" ... passing directly from solid to gas, or from gas to solid, without existing in liquid form in between. Even water does that, if the conditions are right.
Since each light year is approximately 9 trillion kilometres, 4.80 light years is 43.2 trillion kilometres, or 43,200,000,000,000,000 metres
54 is the amount of neutrons there would be
Answer:
B)5.52x10^9 J
Explanation:
The equation for calculating kinetic energy is as follows
E=
so what we have to do is calculate the kinetic energy of the space probe in each state and calculate the difference
E=
E=
E=(1500)(5000^2-4200^2)/2
E=5.52x10^9 J
Complete Question
If a power utility were able to replace an existing 500 kV transmission line with one operating at 1 MV, it would change the amount of heat produced in the transmission line to
a four times the previous value.
b two times the previous value.
c one-fourth of the previous value.
d The amount of heat produced would remain the same.
e one-half of the previous value.
f none of these.
Answer:
Option C is the correct answer
Explanation:
When the voltage is 500kV
The power is
When the voltage is 1MV = 2 × 500kV
The power is
The ratio at which power is lost is
Here Resistance is constant
Hence the heat produced would be one fourth of the previous value