If air resistance is negligible, then according to the law of conservation of energy, the sum of potential and kinetic energies of a freely falling object: 1. remains constant during the fall 2. decreases during the fall increases 3. during the fall becomes zero 4. during the fall flag this questionwhen a spring is a. the potential energy is at a maximum and kinetic energy is at a maximum. b. the potential energy is a minimum and kinetic energy is at a minimum. c. the potential energy is at a maximum and kinetic energy is at a minimum. d. the potential energy is at a minimum and kinetic energy is at a maximum.

Which of the following statements correctly describes a transformer?

The gun from the crime scene shows tool marks where the serial numbers are ground off. there are also tool marks on the bullets left behind. what information can the tool marks on the bullets and gun provide about the crime? what type of evidence does this information provide, individual or class?

Use the library or internet to research each planet. make a chart comparing the following: approximate surface temperature relative surface gravity compared to earth atmospheric gases water in any form: solid, gas, or liquid when you have completed your chart, use the information you have collected to answer the following questions: which is the hottest planet? which is the coldest planet? which planet's temperature is closest to that of earth? (note: water boils at 100°c/212°f. water freezes at 0°c/32°f) which planet has the greatest gravitational attraction? which planet has the least gravitational attraction? which planet's gravitational pull is closest to that of earth? do any of the planets have oxygen in their atmosphere? which planet's atmosphere most resembles that of earth? do any of the planets have flowing water? which planet's water resources (solid, gas, or liquid) might be close to the amount on earth? which planet most resembles earth in terms of all of the factors: temperature, gravity, atmosphere, and water? if earth became an uninhabitable planet, which planet do you think would be the next best to live on? explain your answer.