Ablock is released from rest on an inclined plane and moves 3.1 m during the next 2.2 s. the acceleration of gravity is 9.8 m/s 2 . 10 kg µk 37◦ what is the magnitude of the acceleration of the block? answer in units of m/s 2

What are similarities and differences of reflection, refraction, diffraction and absorption?

What occurs during a combustion reaction

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions