Chemistry, 24.06.2019 18:00 ashley352

According to newton's third law, what is the equal and opposite force to the downward force of gravity pulling on a man standing on the beach? a) the man pulling upward on the earth b) the force of friction holding the man still c) the pull of the sun keeping the earth in orbit d) the surrounding air pressure keeping the man in equilibrium

Answers: 1

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 06:30

What effect might melting sea ice have for people who live in coastal areas?

Answers: 1

Answer

Chemistry, 22.06.2019 11:40

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)

Answers: 1

Answer

Chemistry, 22.06.2019 18:00

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j

Answers: 1

Answer

Chemistry, 23.06.2019 02:30

Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .

Answers: 3

Answer

You know the right answer?

According to newton's third law, what is the equal and opposite force to the downward force of gravi...

Questions