Physics, 06.10.2019 09:02, mujithkalhan2762
Ascientist adds heat to each of the following substances. which will probably absorb the most heat before its temperature changes significantly? 50 g of solid copper 50 g of solid iron 50 g of liquid water 50 g of sand
question 2(multiple choice worth 2 points) a drop of water placed on a smooth, dry surface will form a dome-shaped droplet instead of flowing outward in different directions. which of these best explains this observation? the bonds between hydrogen and oxygen atoms are very strong. the electrons in the atoms attract the electrons in the other atoms. water molecules at the surface experience fewer hydrogen bonds than water molecules within the liquid. water molecules near the surface produce more buoyant force than water molecules within the liquid.
question 3(multiple choice worth 2 points) which of these best explains what happens when the ionic substance calcium chloride (cacl2) dissolves in water? the oxygen atoms in the water molecules are attracted to the ca2+ ions. the oxygen atoms in the water molecules are attracted to the cl− ions. the hydrogen atoms in the water molecules are attracted to the ca2+ ions. the oxygen atoms in the water molecules are attracted to the h+ ions.
question 4(multiple choice worth 2 points) which of these statements about water is true? its atoms share electrons equally. it can dissolve all known substances. its molecules are farther apart in the solid state than in the liquid state. it has a lower specific heat than nearly all known metals.
Answers: 2
Physics, 21.06.2019 22:00, mattydoug4818
What type of light does this light bulb produce most (i. e. at what wavelength does the spectrum have maximum intensity)?
Answers: 3
Physics, 21.06.2019 23:30, idjfjcjs584
Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement
Answers: 3
Physics, 22.06.2019 04:00, joshuabm42407
What is the final velocity of the initial velocity of 25 and -50?
Answers: 2
Physics, 22.06.2019 10:00, jeffffffff
**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z
Answers: 1
Ascientist adds heat to each of the following substances. which will probably absorb the most heat b...
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