A spring with a spring constant of 20 N/m is compressed by 20 cm and has .250 kg ball is placed on top. When the spring is released, how high will the ball rise above the spring before falling?

Disney, viacom and aol time warner are examples of

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

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.