1.) Which of the following would be considered an ecosystem?

A.) A cat chasing get after a mouse

B.) A desert of rocks, sand, hawks, snakes, and scorpions

C.) The human body

D.) The tree in which a squirrel lives

Find the force of gravity between two physics students that have masses of 74.0 kg and 82.5 if they are sitting 0.95 m apart

How do you find mass, volume and density? Any formulas?

A 1.5m wire carries a 8 A current when a potential difference of 78 V is applied. What is the resistance of the wire? Your Answer: Question 17 options: Answer: units:

A student is testing her reaction time by trying to keep a light bulb on for exactly 4 seconds by matching a stopwatch. When she turns the light bulb off, the stopwatch reads 4.13 seconds. What is her reaction time?

The jovian planets contain a large percentage of the gases

Which of the following is not one of the reasons to properly warm up before exercising? A. Develop overall flexibility. B. Increase blood flow to the muscles and raise body temperature. C. Prevent injuries such as strains sprains and muscle cramps.

you are not chilly when swimming in warm water. but when emerging from warm water on a warm summer day, you feel chilly if the wind is blowing. Explain

A Find the magnitude of the angular momentum of the second hand on a clock about an axis through the center of the clock face. The clock hand has a length of 15.0 cm and a mass of 6.00 g.

A geologist finds ripples preserved in ancient sedimentary rock that look just like ripples made by water in mud. He concludes that there was once water in that location that created the ripples. Why is this conclusion reasonable?

In science what is the requirement of doing work?