AC has an outside diameter of 250mm and CD has an outside diameter of 150mm. Both pipes have a wall thickness of 8mm. Torques are applied at B and C. Find the reactions at A and D. Gsteel= 77.2GPa, Gcopper = 44GPa.

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

What is the angular momentum of the bar about the axle?

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