monochromatic light of wavelength λ=800nm illuminates normally a thin liquid film with nf =4/3 and t=500nm lying on a glass of refractive index n=2.5 The liquids refractive index can be continuously increased up to some limiting value by applying a variable voltage across it. a) If the applied...

The tibia is the major weight bearing bone in the lower extremity. If 88% of the body mass is proximal to the knee joint how much compressive force acts on the tibia when an 800N person stands in the anatomical position and holds A 20N weight in each hand? Please provide answer and explanation

A 40 kg cannon is loaded with a 10 kg cannonball and mounted on a 6 kg platform with wheels very low To the ground. The wheeled platform is pushed and moves forward at 3 m/s horizontally. When the Cannonball is fired out, the cannon recoils (backward) with a velocity of 2 m/s relative to the...

What is physics ?