A physics student uses a spring loaded launcher to fire a 58 gram projectile horizontally. The projectile leaves the launcher at 6.0 m/s when the spring is compressed by 2.0 cm.

The cement bag shown in the figure has a mass of 50 kg and the small pulley has a mass of 2 kg. if the cement bag is pulled upwards with an acceleration of 2 m/s^2, find the force f pulling the rope.

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.

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm