According to the diagram which statement best describes what happens when two astronauts collide in space? Will give crown!!!!
Answers
Answer:
J. Their momentum is conserved
Explanation:
According to the diagram, the best statement that describes what happens when two astronauts collides in space is that their momentum is conserved.
The momentum before collision is 320kgkm/hr and after collision it is 320kgm/s
This collision is an inelastic collision;
momentum before = momentum after
m₁v₁ + m₂v₂ = v(m₁ + m₂)
m₁ = 80kg
v₁ = 4km/hr
m₂ = 80kg
v₂ = 0
v = 2km/hr
Insert the parameters;
(80 x 4) + (80 x 0) = 2(80 + 80)
320 = 320
Related Questions
Find the molar mass for NaNO3
Answers
Molar mass
= Atomic mass of Na + Atomic mass of N + Atomic mass of O3
= 23 + 14 + (16×3)
= 23 + 14 + 48
= 85 g per mole
HELP ME PLEASE!! If given a graduated cylinder, a beaker with alcohol and a scale, explain the steps to find the mass of 40 mL of alcohol.
Answers
In general, some people equate mass and weight.
Mass is one of the principal quantities, which is related to the matter , whereas weight is a force that leads to the center of the earth (Earth's gravitational force)
Steps that can be taken to find the mass :
1. Weigh graduated cylinder (empty) 2. Pour the alcohol in the beaker into the graduated cylinder to the level of 40 ml 3. Weigh again graduated cylinder + poured alcohol 4. mass of alcohol 40 ml = mass in 3rd step - mass in the first stepScientists digging in a cave found an unknown substance. The scientists
found that the substance’s molecules were moving around each other. The scientists
increased the speed of the substance’s molecules and caused a phase change. How
did the scientists do this, and how did this affect the substance?
Answers
Answer:
By adding heat energy
It became a gas
Explanation:
The molecules moving about another is a clear indicator that the substance is a liquid.
In a liquid, the molecules stick together and move about one another.
When the scientist increase the speed of the of substance, the kinetic energy increases. if this increase causes a phase change, then the substance becomes a gas. So, by adding heat energy a substance becomes gaseous if it is a liquid already.what is the function of the cell membrane?
Answers
Answer:
Its the thin lining around the cell the moniters what gets in and out of the cell.
Explanation:
HELLLLPPPPPPP
Which of the following is the correct term for the chemical reaction that forms polymers?
A. Displacement
B. Oxidation
C. Polymerization
D. Monomerization
Answers
Can someone help me please will give BRAINIEST
Complete the conversions for the following temperature measurements:
55.3C=_____K
255K=_____C
447K=_____C
-14C=_____K
Answers
255K= -18.5C
447K= 174.85C
-14C= 259.15K
Answer:
55.3 = 328.45k
255 = 18.15°c
447 = 173.85°c
-14 = 14k
Calculate the amount of heat needed to evaporate 235.0 grams of water from 25.0°C to 100.0°C.
Answers
These problems are very hard to do digitally so I would recommend trying to practice these types of problems on paper :)
FISICOQUIMICA HIDROSTATICA
Answers
When magnesium ribbon reacts with steam, a solid called magnesium
oxide and hydrogen gas are formed. Which of the following is the correct
word equation?
O magnesium + hydrogen -> magnesium + water
magnesium + water -> magnesium oxide + hydrogen
O magnesium + water -> magnesium + hydrogen
O magnesium + magnesium oxide -> hydrogen + water
Answers
Answer:
magnesium + water == magnesium oxide + hydrogen
The object will have a minimum gravitational potential energy at point
A)A B)B C)C D)D
Answers
Answer: Decrease
Explanation: The downward slope causes the momentum to decrease in speed rather than increase from an higher point.
why chemical reactions are important to society?
Answers
Got it from google lol
Darwin told us that science:
saves lives
Answers
Answer:yup!!
Explanation:
draw out the following covalent molecules
Answers
Answer:
you did not show the whole page
Explanation:
How does the suns energy contribute to the movement of water in the water cycle?
Answers
Answer:Evaporation
Explanation:
The suns heat speeds the movement of water molecules, until the molecules move fast enough that they jolt out the surface of the water individually. Overtime the water gradually evaporates into water vapor.
Scientists changed the genes of a tomato plant in order to produce a protein which is a natural pesticide. Why would this be classified as a positive mutation?
Answers
Answer:
The plant would be insect-resistant and improve its chances of success.
Explanation:
perience
How many significant figures does each of the following numbers contain?
11. 163.890
12. 00560
13. 156, 100
14. 906,301
15. 6.022 x1023
16. 5.60 x 10-5
Dorform the fol
Answers
Answer:
11
Explanation:
calculate the weight of 5 atoms of Mg.
Answers
Answer:
2.0179701e-22
Explanation:
Suzanne has a cat and uses a pet carrier to take her cat to the veterinarian. After a few years, the cat runs away and hides every time Suzanne gets the carrier out. Which best describes the cat's behavior? instinct reflex conditioned imprinting
Answers
Answer:
conditioned
Explanation:
The best term to describe the behavior of the cat is conditioned.
The cat has been conditioned to respond in a specific way to the pet carrier over time due to certain experiences - most likely, unpleasant ones. With repeated unpleasant experience associated with the per carrier, the cat has been conditioned to dislike/fear the pet carrier and thus, the recorded behavior.
Answer:
conditioned
Explanation:
Which option is a compound?
Answers
Examples of compounds include table salt or sodium chloride , sucrose (a molecule, nitrogen gas, a sample of copper, and water.
what is always true of a week acid??????
A) It only partially dissociates in solution.
B) It does not dissolve in water.
C) It contributes only one proton.
D) It has been diluted with water.
Answers
Answer:
I'm pretty sure it's A
Explanation:
Answer:
for the a p e x quiz:
it dissociates completely in solution.
Explanation:
a p e x
check wether all the answers are correct or not. please?
Answers
Answer:
H2+NO3=HNO3
Explanation:
becuase HNO3
A substance has a molecular formula of C8H10N4O2
Answers
The empirical formula of a substance = C₄H₅N₂O
Further explanationThe empirical formula is the smallest comparison of atoms of compound forming elements.
A molecular formula is a formula that shows the number of atomic elements that make up a compound.
(empirical formula) n = molecular formula
((empirical formula)n=C₈H₁₀N₄O₂
divide by 2 :
(C₄H₅N₂O)₂=C₈H₁₀N₄O₂
The diagram below shows a longitudinal wave at one instant in its motion. Each oval represents a particle acted on by the energy of the wave as it moves from left to right.
Which line on the diagram indicates a region of rarefaction?
Answers
Answer:
Here now you can give the other person the brainly they deserve and they were right too :)
Explanation:
The line that has been the representation of the region of rarefaction in the diagram has been the line below the top line.
The diagram has been the representation of the movement of the particles under the influence of wave energy. The particles have been moving from left to right in the longitudinal order with a gain of energy.
The rarefaction has been the instance where the density of the waves has been lesser or where there has been one wavelength of the wave.
The diagram has been representing, at the line below the top arrow, there have been lesser density of the wave particles, thus, the region of rarefaction has been the instance in the lines below the top line.
For more information about the rarefaction, refer to the link:
https://brainly.com/question/1326823
In what way do the atoms in the same row of the Periodic Table increase from left to right?
Answers
Answer:
As you move from left to right, the nucleus gains protons. This increases the positive charge of the nucleus and its attractive force on the electrons. At the same time, electrons are added to the atoms as you move from left to right across a period.
Explanation:
If You are given 14 moles of C2H5OH(Ethanol) and 13 moles of O2( Oxygen), how
many moles of the limiting reactant is produce? C2H5OH + O2 -> CH3COOH +
H2O
Answers
Explanation:
1 ) first u have to balance the equation but in this case it is already balanced.
2) checking for the limiting reactant:
13 mol O2 × (1mol H2O / 1mol of O2) = 13 mol of H2O
14 mol of ethanol × (1mol H2O/ 1molof ethanol) = 14 mol of H2O
the less amount of moles produced from the O2 so the limiting reactant is oxygen
3) calculating the products moles
13 mol O2 × (1mol H2O / 1mol of O2) = 13 mol
13 mol O2 × (1mol Ch3Cooh / 1mol O2) = 13 mol
note: the ratios obtained from the balanced equation
4) the excess reagent is the ethanol 1 mol will be remain
Why do electronegativity charts often give no values to the group 18 elements?
Answers
Answer:
Because they have complete electronic configuration
Explanation:
Group 18 elements are known as the noble or inert gases. The elements in this group are non-reactive because they have complete electronic shell configuration.
Electronegativity is the tendency of an atom to attract electrons. The reason why atoms attracts electrons is to have a stable configuration like those of the noble gases. Since the noble gases do not require any extra-electrons to attain stability, they have 0 electronegative values.What type of ions do nonmetals naturally form?
Answers
Answer:
Negative Ions
Explanation:
Nonmetals naturally form Negative Ions by gaining electrons to fill the valence shell
Milk of Magnesia is a type of medication people can take to help with heartburn and indigestion cause by stomach acid.
If the pH of this solution is 10.5, which phrase would correctly describe Milk of Magnesia?
This substance would turn blue litmus paper to red.
This substance will likely taste sour.
This substance is acidic.
This substance is basic.
Answers
Answer:
This substance is basic.
Explanation:
The milk of Magnesia, a type of medication which can help people with heartburn and with a pH of 10.5 is a basic solution.
Bases are certain metallic oxides, metallic hydroxides and aqueous ammonia. They have the following properties: On the pH scale, they have a value between 7-14They turn red litmus paper blue. Bases are electrolytes. They have a bitter taste. They are soapy or slippery to feel.what do you conclude from the bar graph
Answers
Answer:
A bar graph shows the relationship between different values of data. Each data value is represented by a column in the graph.
Barry purchased a whole life insurance policy. Which of the following choices is true?
Answers
Answer:
where the following choices??
Explanation: