A 1.3kg physics cart is initially traveling 2.8m/s when it collides with an ideal spring (with a spring constant of 800N/m and natural length shown. The final time is defined as when the spring at maximum compression and the cart is about to rebound backwards. Neglect loss.

Why don't you see your reflection in water with waves or repples

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.

Which is the most accurate name for the ionic compound cas?