Explain how to draw free-body diagrams
What will be an ideal response?
Choose one object, and draw an arrow to represent each force acting on it. Include every force acting on that object. Do not show forces that the chosen object exerts on other objects. To help identify each and every force that is exerted on the chosen object, ask what other objects could exert a force on it. If the problem involves more than one object, a separate free-body diagram is needed for each object.
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As a guide, prepare a similar table showing the order of magnitudes of the thermal resistances of a unit area for convection between a surface and various fluids.
GIVEN • The order of magnitude of convective heat transfer coefficient ( h c) FIND • The order of magnitudes of the thermal resistance of a unit area (A Rc) SOLUTION The thermal resistance for convection is defined by Equation as
The most geologically active moon in our solar system is Ganymede
Indicate whether the statement is true or false
A 3.0-kg and a 5.0-kg box rest side-by-side on a smooth, level floor. A horizontal force of 32 N is exerted on the 5.0-kg box pushing it against the 3.0-kg box, and, as a result, both boxes slide along the floor
How hard do the two boxes push against each other? A) 12 N B) 20 N C) 24 N D) 32 N E) 0 N
If C = 10 ?F, what is the equivalent capacitance for the combination shown?
A. 7.5 ?F B. 6.5 ?F C. 7.0 ?F D. 5.8 ?F E. 13 ?F