The diameter of the sun is 13.9 × 108 m, and the distance from the Earth to the sun is 1.5 × 1011 m. How long does it take for the sun to disappear after it touches the horizon?
What will be an ideal response?
2.1 min
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Answer the following statement(s) true (T) or false (F)
1. Consider a point P midway between two identical charged particles. The electric field vector 
at point P is zero
Which unit best represents a field of view?
a. seconds b. square centimeters c. Celsius d. km
Fluid Flow: For a certain patient, the build-up of fatty tissue on the wall of an artery has decreased the arterial radius by 10%. By how much would the pressure provided by the heart have to be increased to maintain a constant volume of blood flow? Model the blood as an ideal incompressible fluid.
A. 48% B. 52% C. 46% D. 54%
Rub each of two inflated toy balloons with wool or fur. Will they attract each other or repel each other? Explain why