John was pulled by a ski boat that weighs 600kg. John’s friend Chris wants to know how much force will need to be exerted for John to travel 20m/s. What force does the boat need to exert?
What Law of motion is demonstrated?

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

Energy flows from the producer level to the level. is called

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