se calientan 300 gr de cobre a 86°c se deposita en un recipiente con 100 gr de agua a 5°c, suponiendo que no se pierde ni gana calor por el recipiente, encontrar la temperatura final de la mezcla

An experiment was performed on a 2-kg block. forces of 5, 10 and 15 newtons respectively were applied to the block for 5 seconds. describe the difference in acceleration between the three trials. a) the final accelerations will all be the same. b) the final acceleration will triple between the first and third trial. c) the final acceleration will be cut by 1/3 from the first to third trial. d) the final acceleration will increase nine time between the first and third trial.