Show that the friction factor in the Darcy-Wiesbach equation for laminar flow is 64/ReD.
What will be an ideal response?
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A player hits a tennis ball into the air with an initial velocity of 32 m/s at 35° from the vertical. How fast is the ball moving at the highest point in its trajectory if effects of air are negligible?
What will be an ideal response?
Two long parallel wires each carry a current of 5.0 A directed to the east. The two wires are separated by 8.0 cm. What is the magnitude of the magnetic field at a point that is 5.0 cm from each of the wires?
a. 72 ?T b. 48 ?T c. 24 ?T d. 96 ?T e. 32 ?T
A car traveling at constant speed has a net work of zero done on it.
Answer the following statement(s) true (T) or false (F)
Elements such as carbon, silicon and oxygen have been produced in stars and expelled as stars age in the interstellar medium. This is most likely due to these elements having cooled and condensed from aging stars to form dust grains, and carried out by a powerful winds
a. True b. False Indicate whether the statement is true or false