Answer:
Δl=0.0710 in
change is not noticeable!
Explanation:
Quantity that have to stay the same in the tank, no matter of temperature change, is mass of the water. We can express that in the next way:
m_1=m_2
V_1*p_1=V_2*p_2
Where V_1, p_1 represent values at 40 degrees Fahrenheit, and V_2, p_2, represent values of volume and density on 90 degrees Fahrenheit. Next, from the table we can read that p_1(40°F) = 1.940 sl/m^3 and p_2(70°F) = 1.931 sl/m^3 Apply that data, on former equation:
V_1*1.940 sl/m^3 =V_2*1.931 sl/m^3
V_2=4ft^3*1.940 sl/m^3/1.931 sl/m^3
V_2=4.0186 ft^3
Knowing that tank is of cylindrical shape, we can determine depth change by dividing volume change of the water, with surface of the cylinder:
Δl=ΔV/S
Δl=(4.0186-4)/Π/4*(2)^2
Δl=0.0710 in
Note, we multiplied expression with an proper factor, to obtain result in inches. Since change of depth is in order of 0.0... inches, change would not be noticeable by naked eye observation.
Answer:
Explanation:
The fact is that there exists no temperature change until a phase change is complete. That is to say, during a phase change, the energy that will be supplied is used only to separate the molecules. There is no part of it is used to increase the kinetic energy of the molecules. So its temperature will not rise, not really, since the kinetic energy of the molecules remains the same. Also, it should be noted that the average kinetic energy of the molecules does not change at the moment that melting occurs, thus the temperature of the molecules does not change.
Make sure you don’t fly out the window
Answer:
I learned this last year but I don't remember. Sorry
Answer:
Explanation:
Given
Person on earth can jump to a height
initial velocity is u
using
where v=final velocity
u=initial velocity
a=acceleration
s=displacement
final velocity is zero
On moon surface acceleration due to gravity is \frac{1}{6}[/tex] th of earth gravity
so height attained is given by
divide 1 and 2 we get