The faster a string vibrates, the higher frequency sound it produces,
and the higher the pitch is that we hear.
Answer:
Part a)
Part b)
Part c)
Explanation:
Part a)
As we know that the gravitational force is given as
so we will have to find the ratio of force on two planets due to star
so here we have
Part b)
Orbital speed is given as
so the ratio of two orbital speed is given as
Part c)
Time period is given as
so the ratio of two time period is given as
Given the mass of R-134a m = 300kg; Volume of the container V = 9 cu. meter; Temperature of R-134a T = 10 degrees Celsius;
Formula of specific volume : v = V / m = 9 / 300 = 0.03 cu. m / kg.
At T = 10 degrees Celsius from saturated R-134a tables, vf = 0.0007930 cu. m /kg; vg = 0.049403 cu. m/kg. We know v = vf + x (vg - vf), so 0.03 = 0.0007930 + x (0.049403 - 0.0007930), which makes x = 0.601.
Specific enthalpy of R-134a in the container is h = hf + x*hfg = 65.43 + (0.601 * 190.73). Answer is 180.0587 kJ/kg
Answer:
It is best to hold the umbrella at an angle which is parallel to the direction of rain drops.
Explanation:
Velocity of vector of rain drops plays crucial role here. Direction of the wind causes the rain drop directions. Hence handle of the umbrella should be parallel to the direction of rain drops. there will be more umbrella area if we keep umbrella in the direction.
Answer:
it's B I think I did this the other day tbh sorry if it's wrong btw hope this helps
