Answer:
potential energy decreases
kinetic energy increases
I know that ultrasounds are used to determine the sex of the fetus and its general health. I’m not sure about infrasounds.
Answer:
17.2 meters
Explanation:
Carbon dioxide (CO2) molecular mass is 44g/mol, then the number of moles of 10000kg carbon dioxide will be:
10,000kg * (1000g/kg)/ (44g/mol) = 227,272moles
The volume of gas in STP is 22.4 L/mol, then the volume of the carbon dioxide will be:
227,272 moles* 22.4L/mol= 5,090,909 L
One liter equal to 0.001 meter cubic. The formula for cube volume is , if the volume is 5090909L then the side of the cube will be:
volume=
5090909L * (0.001 /L)=
side=
side= 17.2m
Answer:
<h2>
4519.60 J/K</h2>
Explanation:
Change in entropy is expressed as ΔS = ΔQ/T where;
ΔQ is the total heat change during conversion of ice to water.
T is the room temperature
First we need to calculate the total change in heat using the conversion formulae;
ΔQ = mL + mcΔθ (total heat energy absorbed during phase change)
m is the mass of ice/water = 900g = 0.9kg
L is the latent heat of fusion of ice = 3.33 x 10⁵J/kg
c is the specific heat capacity of water = 4200J/kgK
Δθ is the change in temperature of water = 10°C - 0C = 10°C = 283K
Substituting the given values into ΔQ;
ΔQ = 0.9(333000)+0.9(4200)(283)
ΔQ = 299700 + 1069740
ΔQ = 1,369,440 Joules
Since Change in entropy ΔS = ΔQ/T
ΔS = 1,369,440/30+273
ΔS = 1,369,440/303
ΔS = 4519.60 J/K
Hence, the change in entropy of the universe is 4519.60 J/K
Answer:
Explanation:
Given the absence of non-conservative force, the motion of the coin is modelled after the Principle of Energy Conservation solely.
The moment of inertia of the coin is:
After some algebraic handling, an expression for the maximum vertical height is derived: