Carla makes a small cardboard boat and floats it in a tub of water. when she adds a drop of dish soap behind the boat, the boat moves forward.
which statement best explains what happened?
a) the soap increased the viscosity of the water behind the boat, allowing the water in front of the boat to flow more easily.
b) the soap reduced the surface tension behind the boat, causing both water molecules and the boat to be pulled forward.
c) the soap increased the kinetic energy of the water molecules behind the boat, causing both the molecules and the boat to move forward.
d) the soap formed an immiscible layer on the water, causing the soap to spread out and push the boat forward.
Answers: 3
Chemistry, 22.06.2019 05:00
In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?
Answers: 1
Chemistry, 22.06.2019 08:50
If two atoms are bonded to a central atom with no lone pairs,how will they be arranged
Answers: 3
Chemistry, 22.06.2019 12:20
Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.
Answers: 1
Chemistry, 23.06.2019 01:00
Animals that reproduce sexually either do it through external or internal fertilization. read the following statement and decide if it is true or false. birds reproduce through external reproduction which is because the female will then be able to protect the egg.
Answers: 1
Carla makes a small cardboard boat and floats it in a tub of water. when she adds a drop of dish soa...
Mathematics, 15.05.2021 06:40
Mathematics, 15.05.2021 06:40
Mathematics, 15.05.2021 06:40
Mathematics, 15.05.2021 06:40
Mathematics, 15.05.2021 06:40
Mathematics, 15.05.2021 06:40
Computers and Technology, 15.05.2021 06:40
Mathematics, 15.05.2021 06:40
Social Studies, 15.05.2021 06:40
Mathematics, 15.05.2021 06:40
Mathematics, 15.05.2021 06:40
Chemistry, 15.05.2021 06:40