A car is driving at a speed of 50 m/s. After 6 seconds he notices a wreck up ahead and slows down to 20 m/s. What is his acceleration

Natural forces that can alter ecosystems include seasons and climate changes. t or f

Which type of microscope would allow the viewer to see ribosomes inside a cell?

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m