The forearm is a lever in which the bicep muscles provide an upward force which can raise the arm and carry a load. The diagram below represents the forearm as it holds a load of 60 N. The forearm has a weight of 25 N and the centre of gravity, G of the forearm is marked along with the point, P at which it pivots on the adjoining bone. I. Use the principle of moments to calculate the force, B exerted by the biceps to hold the arm and the load stationary

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

What are similarities and differences between refraction, reflection, diffraction and absorption?

In the first law of thermodynamics, triangle e=q-w, what does q stand for