An artillery shell has a mass of 8 kg. The shell is fired from rest at one end of the barrel of a gun. The shell exits the barrel with a speed of 700 m/s. The gun barrel is 3.5 m long.
What is the net force on the shell while it is in the gun barrel?

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

How many times did thomas edison mess up the light bulb

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