Answer:In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction
Explanation:
Answer:
EEEEEeeEEeEEEEEEEeEEEEEEEEEE
Explanation:
e
As the first five elements in Group 14 are considered in order from top to bottom, there are changes in both the
A
electronegativity values and number of first shell electrons
B
electronegativity values and atomic radii
C
number of valence shell electrons and number of first shell electrons
D
number of valence shell electrons and atomic radii
Answer:
A
Explanation:
beacause in both the electronegativity values and number of first she'll electrons
In group 14 from top to bottom there are changes in both the electronegativity values and atomic radii changes.
What are groups?Groups in the periodic table are the columns in which elements are present which all are having same number of valence electrons.
On moving top to bottom in the 14th group of the periodic table:
Atomic size of the elements increases and electronegativity decreases.Number of electrons in the first shell of all elements will be same and in the outer most shell is also same.Hence electronegativity values and atomic radii changes.
To know more about groups of periodic table, visit the below link:
https://brainly.com/question/1645905
#SPJ2
A bicyclist has a mass of 112 kg. In which of the following situations will the cyclist have the most kinetic energy?
A) 10 km / hr.
B) 12 km/hr
C) 14 km / hr
D) 16 km/hr
Answer:
D) 16 km/hr
Explanation:
When the speed increases, the kinetic energy increases, but the mass never changes.
Answer:
d
Explanation:
what the correct answer
Answer:
halogens
hope its right
Answer:
there combine with an acid called sodium chloride or magnesium sulphate
do activity for brainiest:)
PLZ HELP!
How do you think changing the angle of a ramp will affect work done?
Answer: The steepness of a ramp affects it by making it easier or harder.
Explanation: It's a bit situational. If you were going up a steep ramp with a heavy load, it will increase the work necessary, whereas if you were going down a ramp, it would decrease the work necessary. If you need this simply put, think about biking up and down a hill. It would be easier going down than up.
"You learned about mixtures, especially solutions and the factors that affect their makeup and properties. Why is it important to know the properties of both solutes and solvents when preparing a solution that is expected to meet a certain need?
Does this involve a chemical change or a physical change? Explain."
Can u pls help me
Answer:
its due to the solvents being factored. to be prepared for the solution you would need a chemical change as the solvents get factored so this will mean that it will have a chemical reaction. in this case its slightly different so it will be called a chemical change as 2 different chemicals change and evolve.
Explanation:
what percent of the sun's energy is used by the living organism on earth
a. 1%
b. 10%
c. 20%
d. 35%
e. 50%
Answer:
1% A
Explanation:
Organisms that make energy are called ____.
Answer:
Producers
Explanation:
An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. Because autotrophs produce their own food, they are sometimes called producers.
The half life of titanium 44 is 60 years. If you start with 600 grams, how much will be left after 180 years
Answer:
[tex]75\ \text{g}[/tex]
Explanation:
t = Time = 180 years
[tex]t_{1/2}[/tex] = Half-life of titanium = 60 years
[tex]N_0[/tex] = Initial amount of titanium = 600 g
We have the relation
[tex]N=N_0e^{-\lambda t}\\\Rightarrow N=N_0e^{-\dfrac{\ln 2}{t_{1/2}}t}\\\Rightarrow N=600e^{-\dfrac{\ln 2}{60}\times 180}\\\Rightarrow N=75\ \text{g}[/tex]
The mass that is left after 180 years is [tex]75\ \text{g}[/tex].
A wave has a frequency of 46 Hz and a wavelength of 2.3 meters. What is the speed of the
wave?
Answer:
105.8 m/s
Explanation:
V = f * w
Where V is the velocity (m/s)
f is the frequency (hz)
w is the wavelength (m)
Determine the charge of each ion.
al oxygen ion with 10 electrons
(b) aluminum ion with 10 electrons
(c) titanium ion with 18 electrons
(d) iodine ion with 54 electrons
Answer:
(a) ==> O²-
(b) ==> Al³+
(c) ==> Ti²+
(d) ==> I-
An isotope of platinum has 100 neutrons. What is the atomic number of this specific isotope of platinum?
100, 98, 195, 198
Answer:
isotopes of the same elements have the same atomic number
What is the density of an object with a mass of 125 g and a volume of 150 mL ?
Answer:
13
Explanation:
234567877
Explain in a short sentence how you can tell a reaction is a decomposition reaction.
Answer: A decomposition reaction occurs when one reactant breaks down into two or more products.
Mark me as brainilist pls
HELP!!
Which one is balanced?
WILL GIVE BRAINLEST!!!!
Answer:
B
Explanation:
I believe c is the answer but maybe wrong though
HELP
Between steps 2 and 3, the chemical energy in the coal is converted to
Answer:
Transitional Energy ......
Explanation:
Hope this helps..................................
Answer:
heat energy!!!
Explanation:
HELP!!!!!!!!
Between steps 2 and 3, the chemical energy in the coal is converted to
electrical energy
mechanical energy
transitional energy
heat energy
Between steps 2 and 3, the chemical energy in the coal is converted to heat energy. So, the correct option is D.
What is Chemical energy?The bonds of chemical compounds which contain a type of potential energy known as chemical energy. It is the energy that is given out or absorbed during a nuclear rearrangement or chemical reaction.
Chemical energy is a form of potential energy, which can be released and converted into different types of energy such as heat, light or electrical energy. Some examples of chemical energy include power stored in batteries, as well as fuels such as coal, oil and gas, and food. The chemical energy in the coal is converted to thermal energy in the given above example between steps 2 and 3.
Therefore, the correct option is D.
Learn more about Chemical energy, here:
https://brainly.com/question/1371184
#SPJ2
what is a galvanic cell made of?
A. two electrodes in electrolyte solution
B. two beakers connected by a tube
C. two ceramic plates in pure water
D.two medal strips surrounded by air
Explanation:
A because A galvanic cell consists of two half-cells, such that the electrode of one half-cell is composed of metal A, and the electrode of the other half-cell is composed of metal B; the redox reactions for the two separate half-cells are thus: An+ + ne− ⇌ A.
Answer:
A
Explanation:
Which of the following is a physical change?
a. burning gasoline
b. cooking an egg
c. decomposing meat
d. evaporating water
Structural formula of 2 ethyl, 4 methyl-Heptane
A bicycle tire has a pressure of 18.5 lb/in^2 What's the pressure in torr?
Answer:
B y is a complete collection for your time and energy for the spread of Islam in the Horn of the following to make sure
how long does it take for ink to dry
During ____, the chromatin condenses to make ____.
prophase, chromosomes
metaphase, chromosomes
prophase, DNA
metaphase, DNA
what the correct answer
Answer:
Alkali metals are elements found in group 1 of the Periodic Table. Alkali metals are soft, malleable, ductile, and are good conductors of heat and electricity. They have low melting and boiling points compared to most other metals.
Please help!!
It’s due today
Answer:
There is nothing with data to help us complete this chart
THIS IS BAD. THIS IS REALLY BAD
Have ya helped anybody out today, how? And good job!
Answer:
I helped take care of my baby cousin :)
Explanation:
When you drop things into bodies of water, some things sink and some things float. What determines this?
Answer: how dense the object is and if it has air in it.
Explanation:
Answer:
Density determines the situation.
The denser the body than water, it sinks in water
The less dense the body than water, it floats on water.
List 3 particles of an atom (w/their symbol & charge)
Answer:
there are three fundamental particles of atom
which are :
proton ( positively charged (+) )electron ( negatively charged ( - ) )neutron ( having no charge on it ( neutral ))Particle Symbol
electron =》e-
proton =》p+
neutron =》n°
OP
Neutral
Negative
Obits
around the
nucleus
Nucleus
Make up
the mass
of an atom
Positive
Proton
o
O
O
O
Neutron
O
ООО
O
O
ОО
Ο Ο
Electron
о o
Proton
(location)
O
O
O
O
Electron
(location)
O
O
O
Protons and
Neutrons
O
о
o
What is the atomic mass of this atom? *
1 point
the answer is d hope this helps
Answer:
The answer is d
Explanation:
What best describes the location of an atom's electrons? (1 point)
Answer:
The common way electrons are found in shells or orbitals that surround the nucleus of an atom.I hope it helped
Explanation:
pls mark brainliest