Answer:
No.
Explanation:
If the forces are acting on opposite direction, they will cancel out each other. As a result, the object will not move. This type of force is called balanced force. In this type of force the net force acting on an object is equal to 0. Hence, if two groups in the game are exerting equal and opposite force, the rope will not move.
9.Magnetization of iron is a physical change.
A true
B false
Answer:
This is true.
Explanation:
Magnetization of iron is a physical change and not a chemical change as there is no change of state, no change of temperature, no smell and no evolution of gas.
can someone help me please
What did John Dalton contribute to the understanding of the atom?
John Dalton contribute to the understanding of the atom that all matter was composed of atoms, indivisible and indestructible building blocks.
While all atoms of an element were identical, different elements had atoms of differing sizes and mass.
What is an atom?An atom is a particle of matter that uniquely defines a chemical element.
An atom consists of a central nucleus that is usually surrounded by one or more electrons.
Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and their properties.
Dalton based his theory on the law of conservation of mass and the law of constant composition.
The theory states that all matter is made of atoms, which are indivisible.
(1) All matter is composed of tiny, indivisible particles, called atoms, that cannot be destroyed or created.
(2) Each element has atoms that are identical to each other in all of their properties.
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186000 written in scientific notation
Answer:
its 1.86 x 105
Explanation:
i learned it last year
Answer:
1.86 x 10^5
plz, mark brainliest
How many molecules in a mole?
Answer:
One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro's number or Avogadro's constant.
Explanation:
hope this helped!
PLEASE HELP!! :((((((((((((((((((((((((
Where is the word problems? Like the problems that you have to put it in.
Explanation:
The decay of radium-226 produces an isotope
of the element radon and alpha radiation. The
atomic number of radium (Ra) is 88; the atomic
number of radon (Rn) is 86. Write a balanced
equation for this transformation.
Answer:
²²⁶₈₈Ra → ²²²₈₆Rn + ⁴₂He +⁰₀γ
Explanation:
This radioactive decay occurs when the unstable radium-226 atom wants to lose energy by emitting an alpha particle from its nucleus which is an helium nucleus with no electron. The radium (86) is transformed to radon(Rn) where the atomic number of radium (88) is reduced by two units into radon, Rn (86) and mass number reduced by 4 units.
The equation for the transformation is;
²²⁶₈₈Ra → ²²²₈₆Rn + ⁴₂He +⁰₀γ where
²²⁶₈₈Ra ---------radium-226
²²²₈₆Rn -------radon-222
⁴₂He ----------alpha particle
⁰₀γ ------------energy
Note that ⁴₂He can also be written as : ⁴₂∝
Answer:
it is alpha decay
Explanation:
im albert einstien
explain how are you able to drink liquid through a straw
Answer:
the suction pulls out the air in the straw and the liquid comes up with the suction.
Answer:
ya that is correct
Explanation:
what are the properties of a match before it's light on fire
Answer:
The fire sucks the match
Explanation:
It is peedo
Calculate the energy of a light having a wavelength of 6.80 x 102 nm.
Answer:
Energy, [tex]E=2.92\times 10^{-19}\ J[/tex]
Explanation:
Given that,
The wavelength of a light is [tex]6.8\times 10^2\ nm[/tex]
We need to find the energy of light. The formula for the energy of light is given by :
[tex]E=\dfrac{hc}{\lambda}\\\\E=\dfrac{6.63\times 10^{-34}\times 3\times 10^8}{6.8\times 10^2\times 10^{-9}}\\\\E=2.92\times 10^{-19}\ J[/tex]
So, the energy of a light is [tex]2.92\times 10^{-19}\ J[/tex].
What is the mass number of hydrogen? DUE TODAY!!!!
A graduated cylinder is filled with 54.32 cm3 of water. An irregular solid made of iron is carefully placed into the graduated cylinder. The new volume recorded on the graduated cylinder is 57.65 cm3. The density of iron is known to be 7.874 g/cm³. What is the mass in grams of the irregular solid made of iron?
Answer:
The answer is 26.22 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
density of iron = 7.874 g/cm³
volume = final volume of water - initial volume of water
volume = 57.65 - 54.32 = 3.33 mL
We have
mass = 7.874 × 3.33 = 26.22042
We have the final answer as
26.22 gHope this helps you
What does an atomic number represent in an atom?
A) number of electrons
B) number of protons
C) number of protons and neutrons
D) number of neutrons
Answer:
C, number of protons and neutrons
An ionic bond occurs between a ___ and ___
Answer:
An ionic bond occurs between two opposite charges are attracted
Explanation: Two opposite charges are attracted to each other
Compare and Contrast Iced Tea, Salad Dressing
Answer:
dressing is for salad and tea is a drink but the are both liquids and brown
Which of these is a chemical property of aluminium
Answer:
Option 1
Explanation:
Density of 2.70 g/cm^-3
Answer:
Explanation:
For it’s actually ( Aluminium is highly reactive )
What are the main characteristics for the definition of work?
Answer:
1-There Must be some displacement in the direction of force. 2-Angle between force and displacement is 0°.
It is MOST accurate to say that body mass index (BMI) provides information about __________.
A.
body composition
B.
an individual's height-weight ratio
C.
cardiorespiratory fitness levels
D.
an individual's height
It is most accurate to say that body mass index (BMI) provides information about an individual's height-weight ratio.
What is body mass index?
BMI takes into account natural variations in body shape, giving a healthy weight range for a particular height.
As well as measuring your BMI, healthcare professionals may take other factors into account when assessing if you're a healthy weight individual.
Muscle is much denser than fat, so very muscular people, such as heavyweight boxers, weight trainers and athletes, may be a healthy weight even though their BMI is classed as obese.
Your ethnic group can also affect your risk of some health conditions. For example, adults of South Asian origin may have a higher risk of some health problems, such as diabetes, with a BMI of 23, which is usually considered healthy.
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Are corals minerals? Why?
Answer:
yes they are minerals becomes they contain components that have things minerals contians.
Explanation:
Which property is the least reliable method for identifying a mineral
A. color
B. luster
C. streak
D. cleavage
Answer:
I think it is a color but I'm not completely sure
Answer:
Color
Explanation:
Correct any mistakes in the electron configurations below.
Answer:
E.) 1s^22s^22p^23s^4p^4
Explanation:
Answer:
See explanation.
Explanation:
D. 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d8;
Explanation: before filling 3d orbitals, 4s needs to be filled. Since s holds 2 electrons, take two from the 3d10.
E. 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p3;
Explanation: after the 4s orbital, the 3d orbitals need to be filled. You do not fill the 4d orbitals until the 5s orbital is filled.
Here is a quick review of the order orbitals need to be filled in:
1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p;
s holds 2 electrons; p holds 6 electrons; d holds 10 electrons; f holds 14 electrons.
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The Moon doesn’t actually change ________, but it appears to from Earth because the part lit by the Sun changes as it travels around Earth.
Answer:
Shape?
Explanation:
that's the only thing that would make sense
Answer:
Shape
is the answer
aluminium oxide has a very high melting point (2072 degrees C) while carbon dioxide has a very low boiling point (-57 degrees C). Explain this difference clearly.
Please help I don’t get what it’s asking!!!
Answer:
Well, Aluminum Oxide has a very high melting point. Carbon dioxide has a very low boiling point.
Explanation:
They are both talking about different things, melting and boiling. Aluminum Oxide's melting point is much higher then carbon dioxide's melting point. Hope this help, and good luck on your assignment (if one)
ANSWER FAST PLEASE
Maria’s class has learned how to drop an egg without breaking it. After 0.2 s, the kinetic energy of the falling egg is 0.5 J. If its mechanical energy is 2.3 J, what is its potential energy?
A. 1.2 J
B. 1.8 J
C. 2.8 J
D. 4.6 J
The Potential energy of the body is 11.8 Joules
The mechanical energy of the egg is given by the formula:
Mechanical energy = Potential energy + kinetic energy
Given the following parameters;
Mechanical energy = 2.3 JoulesKinetic energy = 0.5 JoulesFrom the formula:
Potential energy = ME = KE
Potential energy = 2.3 - 05
Potential energy = 1.8 Joues
Hence the potential energy of the body is 11.8 Joules
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Can someone explain cellular respiration?
Answer:
Explanation:
set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules[1
Put the following in order of decreasing electronegativity:
Oxygen-
Fluorine-
Carbon-
Lithium-
Beryllium-
Answer:
Carbon < Lithium < Beryllium < Oxygen < Fluorine
Explanation:
Which of the following would be true when iodine gains valence electrons?
A. it would form a cation with a -1 charge.
B. it would form a cation with a +1 charge.
C. it would form a anion with a -1 charge.
D. it would form a anion with a +1 charge.
Answer:
C. it would form a anion with a -1 charge.
Explanation:
The elements of group 17 are called halogens.
These are six elements Fluorine, Chlorine, Bromine, Iodine, Astatine. Halogens are very reactive these elements can not be found free in nature. Their boiling points also increases down the group which changes their physical states. i.e fluorine is gas while iodine is solid.
They require only one electron to complete the octet and get stable. Thus they form anion with charge -1 when they gain electron.
l + e⁻ → I⁻
They form ionic compound with alkali and alkaline earth metal such as sodium chloride (NaCl), Barium iodide (BaI₂) etc.
Properties of Iodine:
1. it is present in solid form.
2. it is crystalline in nature.
3. it is very corrosive and has pungent odor.
4. it can not react with oxygen and nitrogen.
For the change H2O2 --> H2O, is the oxygen oxidized, reduced, and/or neither?
Answer:
Reducing / reduced
The density of water is 1g/cm3. What might be the density of an object that floats in water
Answer:
The mass of water is known to be 1 g/mL or 1 g/cm3. If an object has a density greater than 1 g/cm3, it is denser than water and will sink. If it has a density of less than 1 g/cm3, it will float. For example, a penny is made out of zinc (7.14 g/cm3) and copper (8.96 g/cm3) so it sinks in water.
Explanation:
5. How does the temperature change as altitude increases?
Answer:
when the altitude increases the temperature decreases. it's happens because the pressure changes(below the stratosphere)
Explanation:
+altitude------> - pressure(ar above us)---> -temperature
