<span>(a).the heat trasfer surface area and heat flux on the surface of filament are
Area of Surface= µDL=3.14(0.05cm)(5cm)= 0.785 cm square
qs=Q/Area of surface= 150W/0.785= 191W/cmsq.=1.91x10Âłx10ÂłW/Msq
(b). the heat surface on the surface of heat bulb
Area of surface = 3.14xD²= 3.14(8CM)²= 201.1cm²
qs=Q/Area of surface=150w/201.1cm²=0.75 w/cm²= 7500w/m²
the amount and cost of electrical energy consumed during one period is
Electrical Consumption=QΛt=(0.15 KW)(365X8h/yr)=438 k Wh/yr
Annual cost= 438 kWh/yr)($.08/kWh)= $ 35.04 /yr</span>
It is a physical change. One is physically change the wheat from one form to the other.
Answer:
The water will flow at a speed of 3,884 m/s
Explanation:
Torricelli's equation
v =
*v = liquid velocity at the exit of the hole
g = gravity acceleration
h = distance from the surface of the liquid to the center of the hole.
v = = 3,884 m/s
<span> the </span>law of conservation of energy<span> states that the total </span>energy<span> of an isolated system remains constant it would be said to be conserved over time. </span>Energy<span> can neither be created nor destroyed but then rather, it transforms from one form to another.
hope this can help you ^_^</span>
The correct answer is 100 N.
In fact, the problem already says that the force exerted by magnet A on magnet B is exactly 100 N. The information about the magnetic field intensity of the two magnets is redundant, because we are interested only in the magnitude of the force.