For Questions 21 to 22, indicate whether the statement is True or False. Give an explanation. 21. When a gas filled in a cylinder fitted with a movable piston is allowed to expand, the
work done by the gas is positive.
22. When a body is lifted, the work done by the gravitational force is positive.

Which is not a standard weather variable? a. air pressure b. moon phase c. temperature d. wind speed

According to a recent survey, the local government wants to classify people according to their income earning capacity. they want to do so in order to provide special facilities for the poor. who among the four individuals will be classified as poor? a. joseph earns $2.25 per day b. maria earns $1.50 per day c. rosita earns $2.00 per day d. tim earns $ 1.00 per day

Quiero una redaccion de yo soy medico y que tenga 10 lineas