What property is a characteristic of a pure substance that can be observed with out changing the substance into something else

When should the power switch be in the off position

The (Kelvin-Planck statement of the) second law of thermodynamics reads as follows: It is impossible for an engine working in a cycle to produce no other effect than that of extracting heat from a reservoir and performing an equivalent amount of

What does the spinal cord on a sheep brain do

A-8.5 kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.6 m above the counter? (g=9.8m/s)

The Force Of Gravity Acting On A Childs Mass On Earth Is 490 newtons whats the childs mass

4. A car of mass 2000 kg is traveling at 45 m/s when the driver spots a policeman anead. i ne univer apprivo the brakes lightly for 3.0 seconds until he slows down below the speed limit. If the average force applied by the brakes was 1.

When does a scientist create the conclusion?

When using a simple machine, the force you must overcome. A simple machine usually multiplies the effort force to exceed the this. Example: Lucy lifts a sack of potatoes using a pulley. The weight of the sack of potatoes is this.

How is ecology diffrent from earth science

Which theory was first proposed by Albert Einstein? A. the theory of special relativity B. the theory of universal gravitation C. the theory of inertia D. the theory of radioactivity ... the answer is A i just found out