Three teenagers push a heavy crate across the floor. dion pushes with a force of 185 n at 0°. shirley exerts a force of 165 n at 30°, while joan pushes with 195 n force at 300°. what is the resultant force on the crate? solve each problem algebraically

Determine the maximum r-value of the polar equation r =3+3 cos 0

What is the stall speed at sea level of an airplane that weights 10000 lbs., has a wing area of 300ft^2, and a maximum lift coefficient of 1.4? what is the stall speed if flaps that double cl,max are applied?

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant