A hypodermic needle consists of a syringe of radius 8.30*10^-3 m,
connected to a needle with an inner
radius of 2.45*10^-4 m. A nurse pushes
the plunger at 0.00700 m/s, and the
fluid flows through the needle and into
the air. How fast does the liquid come
out of the needle?

Why can blue light and yellow light combine to produce white light? question 17 options: they are both primary colors of light. they absorb each other's wavelengths. because blue, yellow, and white are primary colors. they are complementary colors of light.

Which branches of natural science include the study of an organism that lived 10 million years ago

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.