3. a heavy mass is swung in a horizontal circle at a constant speed. if the radius of the
circle is tripled, what happens to the centripetal force experienced by the mass? (hint-
look at formula)
calauate the force acting between the earth and the moon using this data:

Orange juice has a lower or higher viscosity than chocolate syrup

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.