Answer:
The answer is option DExplanation:
To find the speed given the kinetic energy and mass we use the formula
[tex]v = \sqrt{ \frac{2KE}{m} } \\ [/tex]
where
m is the mass
v is the speed
From the question
KE = 15 J
m = 2.3 kg
We have
[tex]v = \sqrt{ \frac{2 \times 15}{2.3} } = \sqrt{ \frac{30}{2.3} } \\ = 3.61157559...[/tex]
We have the final answer as
3.6 m/sHope this helps you
How do homes lose thermal energy?
I need TWO reasons on why we want to reduce the thermal loose.
Answer:
Poorly insulated attics, windows not being insulated in the winter
Explanation:
One reason is so we do not get cold in the winter and the reason we have a home is to protect us from the weather or put a shelter above us. Second reason is so we don't get hypothermia in the winter time.
2) A student was working on an investigation to measure the relative activity
of an enzyme at various pH values. He collected the following data:
pH 2, enzyme activity 10; pH 8, enzyme activity 50;
pH 12, enzyme activity 10; pH 4, enzyme activity 20;
pH 6, enzyme activity 40; pH 10, enzyme activity 40
Answer:
THE LAST ONE
Explanation:
what is the density of an object with a mass of 100 grams and a volume of 50 cm
Answer:
2
Explanation:
because 100÷50=2m÷v=d
Which of the following occurs when a liquid becomes a gas
Answer:
Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.
what is the mass of an atom if it has 11 protons, 12 neutrons, and 11 electrons
A,22, B.23, C34, D 11
Answer:
23, B
Explanation:
The mass of an atom is determined by the number of Protons + Neutrons. Here, if we assume the units is AMU (Which means the mass unit for a proton and neutron would be basically 1), the answer would be 11 + 12 = 23 AMU, which is B.
Answer:
B) 23
Explanation:
Relative Mass = number of protons + number of neutrons
Relative Mass = 11 + 12
Relative Mass = 23
1.The diagram below shows the stages of a land feature being formed over
time.
Stage 1
Stage 2
Stage 3
How has the area been
reshaped over time?
Answer:
I think....I'm not sure......the plats of earth shifting?
Explanation:
What is the freezing point on this graph?
Answer:
Point a becuse it is the closest to -5*
Explanation:
Answer:
-5
Explanation:
Negative numbers get you confused.
- = Negative
5 = Number
You know 5 right?
I I I I I - 5
5 is a really less number already.
If you add a negative it will be double small.
Now lets figure out the problem:
What is the freezing point on this graph?
-5 is the smallest number
5 is bigger than -5
15 is bigger than 5 and -5
25 is bigger than all the numbers.
I know what your thinking. 25 is totally not the answer. Its the biggest number. Freezing is a very low number. What number is the lowest out of -5, 5, 15, 25. You see -5.
Therefore, -5 is freezing.
Question 4 (4 points)
Special bonds formed because of electrostatic interaction between molecules are called
A.intermolecular forces
B. intramolecular forces
C.permanent forces
D.magnetic forces
Answer:
A. intermolecular forces.
help me please im in 4th grade and online is frustrating
Answer:
A
Explanation:
The answer is A) because the A container has tightly packed molecules but not as tight as C so that means A is liquid, and C is a solid which makes B a gas
Answer:
The answer would be A
Explanation:
because in the first picture Liquid could be in many shapes like If I put water in my water bottle it would be the same shape as the water bottle.
In the third picture, the solid molecules will always be so close to each other like they will be stick to each other.
In the second picture, It will be separate always, as it cant stick to each other.
I hope I helped you!!!!
:)
I need help with my chemistry homework
Speed in excess of 100 km/h, which is 208.8 km / h
Further explanationLinear motion consists of 2: constant velocity motion with constant velocity and uniformly accelerated motion with constant acceleration
• An equation of uniformly accelerated motion
[tex]\large {\boxed {\bold {x=xo+vo.t+\frac {1} {2} at ^ 2}}}[/tex]
vt = vo + at
vt² = vo² + 2a (x-xo)
x = distance on t
vo / vi = initial speed
vt / vf = speed on t / final speed
a = acceleration
I think it's not chemistry but physics
KnownΔx = 290 m
vf = 0⇒stop
Δt = 10 s
We use the formula in the question
[tex]\tt \Delta x=\dfrac{1}{2}(vf+vi)\Delta t\\\\290=\dfrac{1}{2}(0+vi).10\\\\vi=58~m/s=\boxed{\bold{208.8~km/h}}[/tex]
A glass of milk occupies a volume of 50.0 mL and has a mass of 52.0. what is its density
Answer: 1.04 is the density. Explanation: Just like a solid, the density of a liquid equals the mass of the liquid divided by its volume; D = m/v. 52.0/50.0=
On July 8th, I will be 8.51472x108 seconds old. How old will I be in years? (Assume 365 days in a year.)
step by step
Answer:
You will be 27 years old (✿◠‿◠)
Urgent please help!!
Which of these is a chemical property of a substance?
A) texture
B) ductility
C) reactivity
D) conductivity
Answer:
reactivity
Explanation:
(GIVING BRAINLIEST)
Balance each of the following chemical equations below
Explanation:
A.
AgNO₃ + KCl → AgCl + KNO₃ (Already Balanced)
B.
H₂O + SO₃ → H₂SO₄ (Already balanced)
C.
2KI + Cl₂ → 2KCl + I₂
D.
2NaHCO₃ → Na₂CO₃ + H₂O + CO₂
E.
Zn + 2HCl → ZnCl₂ + H₂
F.
BaCl₂ + Na₂SO₄ → BaSO₄ + 2NaCl
G.
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
H.
2Al + 3CuCl₂ → 2AlCl₃ + 3Cu
Complete the sentence.
Atoms form chemical bonds to satisfy the
rule and to become
Answer:
Whats the sentence
Explanation:
Answer:
Atoms form chemical bonds to satisfy the octet rule and to become stable.
Got it right on Edg. 2020, hope this helps!
How much does a sample of C6H12O6 weigh if it contains 1.7 x 10^28 hydrogen atoms?
Answer:
Explanation:
Glucose has 6 number of carbon atoms, 12 atoms of oxygen and 6 atoms of oxygen
The total number of glucose atom is 24 atoms
The atom of hydrogen is twice that of carbon
that is (6.02 x10^22) x2=1.204 x10^23atoms
the number of moles of hydrogen is solved as follows
1mole = 6.02x10^23 atoms what about 1.204 x10^23=
{(1.204x10^23)/(6.02 x10^23)}=0.2moles
The moles of glucose
1 atom of glucose= 6.02 x10^22 x4 =2.408 x10^23 atoms
moles= { (2.48 x10^23)/(6.02 x10^23)}=0.41moles
Hope this helped :)
Plz help or I get a zero!!!!!
Name the order of the planets from closest to the sun to farthest.
Sun, _________________, _________________, _________________, _________________,
_________________, _________________, _________________, _________________, Pluto
7. Name the inner planets.
Circle the correct term for inner planets: terrestrial (rocky) or gaseous
8. Name the outer planets.
Circle the correct term for outer planets: terrestrial (rocky) or gaseous
Answer:
Order: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Inner Planets: Mercury, Venus, Earth, Mars
Outer Planets: Jupiter, Saturn, Uranus, Neptune
Explanation:
.
Which pair of atoms are isotopes of each other?
a
oxygen-16 and oxygen-18
carbon-14 and nitrogen-14
iodine-131 and iodine-131
e
d
radium-222 and radon-222
Answer:
b sorry if im wrong
Explanation:
hope it helped
Is the following an element, compound, homogeneous mixture, or heterogeneous mixture?
Coca-cola
Answer:
CO2 is classified as a compound
Explanation:
First to answer both CORRECTLY gets brainleist!
Answer: I am actually studying about Stars, so I got you.
3. As the temperature of a star Increases, it's luminosity increases.
As the temperature of a star decreases, it's luminosity decreases.
4. Hot and Bright. The bigger the star, the hotter it gets is from what I learned.
Answer: As the temperture of a main sequence star increases, the luminosity increases, vice versa
Cool and bright
Explanation:
What is the main point of mutation ?
quick please !!
Answer: type of mutation that causes the replacement of a single base nucleotide with another nucleotide of the genetic material, DNA or RNA. The term point mutation also includes insertions or deletions of a single base pair.
Explanation:
Answer:
Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele.
Explanation:
Mutations put new DNA combinations into a population
Which element has four times as many protons in its nucleus than are found in Neon?
Answer:
Zirconium, Zr, 40
Explanation:
Protons can be found by looking at the atomic number. Neon's atomic number is 10, so just multiply 10 by 4 and you get 40.
place the items in order from highest to lowest degree of internal organization.
tissue
organ system
organ
cell
Put them in order please PLEASE
Answer:
I hope this helps! Can I have Brainliest plz :)
Explanation:
How can we gather more evidence about weather lava or water formed the channel on Mars
According to Bohr, why don't the electrons fly off into space?
Answer:
because Electrons are not little balls that can fly
Explanation:
What satement is true the about atomic mass?
Answer:
Explanation:
A. It can be greater than the atomic number
How many fluorine atoms are present in 6.30 g of C2F4
Fluorine atoms = 1.517 x 10²³
Further explanationThe mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
[tex]\large{\boxed{\boxed{\bold{mol=\frac{mass}{molar\:mass}}}}[/tex]
Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements
Mass of F[tex]\tt mass~F=\dfrac{4.Ar~F}{MW~C_2F_4}\times mass~C_2F_4\\\\mass~F=\dfrac{4.19}{100}\times 6.3=4.788~gr[/tex]
mol of F[tex]\tt =\dfrac{4.788}{19}=0.252[/tex]
number of Fluorine atoms[tex]\tt 0.252\times 6.02\times 10^{23}=1.517\times 10^{23}[/tex]
The amount of kinetic energy an object has depends on which feature of the object?
Answer:
mass
Explanation:
The amount of kinetic energy an object has, depends on its mass and its speed.
Answer: motion
Explanation:
I just took the quiz in edging
Which sublevel comes after 4d orbital
Answer:
5s
Explanation:
The 4d sublevel is filled next, after the 5s sublevel.
Which of the following d shell configurations is likely to be the best magnet?
Answer:
D10 is answer
Explanation:
Magnetism can result from unpaired electrons in a given ion of an element, depending on the spin states of the electrons and d10 is fully filled
The d 10 is the d shell configurations which is most likely to be the best magnet.
What are configurations?Configurations are defined as the way that parts are joined together to form the computer system. The arrangement of electrons scattered throughout the orbital shells and subshells is depicted by the electron configuration of an atom. Divide the periodic table into pieces to represent the atomic orbitals, the areas where electrons are stored, in order to determine an electron configuration. The s-block is represented by groups one and two, the d-block by groups three through twelve, the p-block by groups thirteen to eighteen, and the f-block by the bottom two rows.
Depending on the spin states of the electrons and whether or not d10 is completely filled, magnetism can emerge from unpaired electrons in a specific ion of an element.
Thus, the d 10 is the d shell configurations which is most likely to be the best magnet.
To learn more about configurations, refer to the link below:
https://brainly.com/question/13410673
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