Which visible quality of smoke shows that it contains a lot of gas influencing the other particles?
O The shade of the color is different in different places.
O Smoke usually has an unpleasant smell.
O Smoke rises out of very hot substances.
O The shape of the smoke changes very easily.

Which of the following statements does not explicitly describe a transfer of money a. a ball dropped from a heigh hits the ground with a high speed. b. the collision produced in a nuclear reaction heat up the surroundings. c. a plane increases its air speed from 150 mi/hr to 200 mi/hr. d. the electricity from the power socket causes the fan to turn.

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?