d A block with mass m=0.4kg is released from rest and slides a distance d=2.5m down a frictionless inclined plane where it strikes a spring of spring constant K=8N/m. 0 = 30° h = d sin 0 a. Find the speed of the block just before it hits the spring. b. Show that the potential energy after the strike is described by the function U(x)= 4x² -2x assuming Uo=0J c. Find the maximum compression x of the spring. d. Determine the maximum speed of the block after the collision. e. The spring was shown to be non-ideal. Is described by the function U(x)= 4x²-x³ Find the equilibrium points for the non-ideal spring.

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Radiation

Radiation can be described as the energy in the form of a particular matter or electromagnetic waves traveling in the air and can be in the form of light, sound, and heat. Radiation can be detected through special instruments like X-rays. The radiation from a cooler object is less intense as compared to the radiation from hot objects.