Acarpenter uses a crowbar to remove the top of a box. the top has a resistance of 500 n. the carpenter applies an input force of 250 n. what is the mechanical advantage of the crowbar?

use the formula mechanical advantage = output force/input force to solve the following problem.

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m