Aparachutist of mass 75kg descends with an acceleration of 8 m/s2. what is the upward force exerted by the air on the parachutist?

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Rohit is trying to tune an instrument