You are a police officer who arrives at a scene of an accident. The only evidence that you have is the skid mark left on the road. Fortunately no one gets hurt. The driver indicates that he was not speeding. How could you be sure that he was speeding or not. Explain how you would
calculate and analyze his speed. You can use the formula : W = change in kinetic energy (energy- work theorem).

An object is 10. cm from the mirror, its height is 3.0 cm, and the focal length is 2.0 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1.33 -1.33 +0.75 -0.75

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig