Answer:
Answer:Your skeletal system relies on the nutrients it gains from your digestive system to bulid strong healthy bones .A body system is a group of parts that work together to serve a common purpose .
maybe this might be ur answer
(7.6 x 104m) x (1.5 x 107m)
Answer:
the answer should 126 859.2 m2
What is the meaning of democracy
Answer:
a system of government by the whole population or all the eligible members of a state, typically through elected representatives. its like everyone has a choiceExplanation:
Answer:
Demorcay is:The form of government of the entire population or of all qualifying members of the state, generally by elected representatives:
Explanation:
What is meant by the term chemical bond? What subatomic particles(protons, neutrons, electrons) are most important in bonds?
Explanation:
Chemical Bonding refers to the formation of a chemical bond between two or more atoms, molecules, or ions to give rise to a chemical compound.
The subatomic particles that participate are electrons.
Un niño de 9 años se encuentra balanceándose en un columpio, si el columpio se encuentra en equilibrio y la cadena que soporta la canastilla donde se sienta el niño tiene un peso de 15Kg y este se encuentra a 42°con respecto a la perpendicular. Determine la tensión de la cadena y la fuerza con la que es empujado si el niño pesa 35Kg.
Answer:
Part A
La tensión en la cadena es de aproximadamente 364,14 Newtons
Part B
La fuerza con la que se empuja el columpio es de aproximadamente 327,874 Newtons
Explanation:
Parte A
Los parámetros dados son;
La masa del asiento en el que se sienta el niño = 15 kg
La inclinación de la cadena de la vertical, θ = 42 °
La masa del niño = 35 kg
La aceleración debida a la gravedad, g = 9,8 m / s²
La tensión en la cuerda, 'T', se da de la siguiente manera;
T = m · g · cos (θ)
Dónde;
m = m₁ + m₂ = 15 kg + 35 kg = 50 kg
g = La aceleración debida a la gravedad = 9,8 m / s²
θ = 42 °
Por lo tanto;
T = 50 kg × 9,8 m / s² × cos (42 °) ≈ 364,14 N
La tensión en la cadena, T ≈ 364.14 N
Parte B
La fuerza con la que se empuja el columpio, 'F', se da de la siguiente manera;
F = m · g · sin (θ)
Por lo tanto;
F ≈ 50 kg × 9,8 m / s² × sen (42 °) ≈ 327,874 N
La fuerza con la que se empuja el columpio, F ≈ 327,874 N.
List two functions organ systems can perform
Answer:
nervous system- sends signals to the brain
respiratory system- sends oxygen to the body
cells are____structures that constantly______to forem new cells
Answer:
Explanation:
living
divide
The mass of an atom is equal to the number of
Neutrons, only
Protons, only
Neutrons plus protons
Electrons plus protons
Explanation:
proton number and neutron number sums up to form the mass number
Answer:
Neutrons & protons
Explanation:
hope it's help..
is a group of deer in a field called a community or a population?
Answer:
hi
Explanation:
Answer:
From the 2, I believe it is called a community.
are absolute temperature and kelvin temperature scale the same thing
Answer:
No they are not the same..
Explanation:
Absolute temperature is the temperature of an object on a scale where 0 is in the lowest possible energy state while the kelvin is a base unit of temperature.
How many moles are in 26.8 L of NaCl?
Answer:
1.2 mol
Explanation:
26.8L x 1mol/22.4L = 1.2 mol
What is an example of chemical to electrical energy at home? Please help
Which statement accurately compares plant and animal cells?
A. A plant cell has a nucleus, but an animal cell does not.
B. A plant cell has a cell membrane and a cell wall.
C. An animal cell has a cell membrane and a cell wall.
D. An animal cell has mitochondria, but a plant cell does not
Answer:
B
Explanation:
A plant cell has a cell membrane and a cell wall
Based on the information in the tables, which salt will produce the greatest change in temperature when dissolved in water at 20 c
Answer:
See Explanation Note ...
Explanation:
Depending on amount added, Anhydrous CaCl₂ when dissolved in water solvent can become hot enough to blister ones skin when touched. On the cold side, Ammonium Nitrate will cool an aqueous solution enough to generate condensate frost on the outside of a glass beaker. I'm sure there are more examples but these two came to mind.
Answer:
KOH
Explanation:
I took the test
HELP ASAP
What was the result of the atomic theory?
A. Alchemy was transformed into a true science.
B. The atom was discovered.
C. Scientists realized there were four main elements.
D. Chemists began to better understand the properties of matter.
The result of the atomic theory was that chemists began to better understand the properties of matter. Therefore, option (D) is correct.
The atomic theory, proposed by John Dalton in the early 19th century, postulated that matter is composed of indivisible particles called atoms. This theory revolutionized the field of chemistry by providing a framework to understand the behavior and interactions of different substances.
By recognizing that matter is composed of discrete atoms with specific properties, chemists were able to explain phenomena such as chemical reactions, the conservation of mass, and the formation of compounds. The atomic theory laid the foundation for modern chemistry, leading to advancements in understanding the structure of atoms, the development of the periodic table, and the ability to manipulate and engineer materials at the atomic level.
Learn more about atomic theory, here:
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Hi! I'm doing homework about covalent bonds in Chemistry and I am supposed to figure out which 3 are right and which 3 are wrong. I'm having a really hard time. Any help is appreciated!
Answer:1,5,4
Explanation:
Plssss help————>An object thats (A. Negatively, B. Neutrally, C. Positively) charged has more electrons than protons. An object that’s (A. Negatively, B. Neutrally, C. Positively) charged has fewer electrons than protons. An object that’s (A. Negatively, B. Not, C. Positively) charged has the same number of electrons and protons.
Answer:
1) negatively
2) positively
3) Neutral
Explanation:
What happens when an electrically charged pencil is placed close to the water running from a faucet?
the pencil attracts the water
the pencil becomes positively charged
the water attracts the pencil
the water repels the pencil
Answer:
the water repels the pencil
Explanation:
Since the an electrically charged pencil is placed close to the water running from a faucet :D
Answer:
Option 2
Explanation:
:)
how are enthalpy and entropy related to chemical reactions? (in simple terms)
Answer: Enthalpy is the heat content of a system. The enthalpy change of a reaction is equivalent to the amount of energy lost or gained during the reaction. A reaction is favoured if the enthalpy of the system decreases over the reaction. Entropy refers to the measure of the level of disorder in a thermodynamic system.
Explanation: hi lol
Combustion analysis of a hydrocarbon produced
0.40g of CO2 and 0.205g of H20. Calculate the
empirical formula of the hydrocarbon.
14. Energy (heat) is always transferred from ___ energy to ___ energy
A. low kinetic; high kinetic
B. high kinetic; high kinetic
C. high kinetic; low kinetic
D. low kinetic; low kinetic
Answer:i pretty sure it is high to low kinetic
Explanation: because heat or energy travels from hot heat to low heat which heat is the same as kinetic
What are the main properties of any liquid? Explain how you can measure the volume of a liquid sample.
Answer:
Liquid has the following properties -
- Liquids are almost incompressible due to the fact that molecules do not have a lot of space between them so they can not be compressed.
- Liquids have a fixed volume but shape varies according to the container it is placed in. It changes the shape even the volume is the same.
- Liquids flow from higher to lower levels.
- Liquids have their boiling points above room temperature, under normal conditions.
Measure the volume of a liquid sample-
The volume of the liquid can find out by dividing the mass of the liquid by the density of the liquid. D = m/v. The density of water is 1 gram/cubic centimeter.
HELP DUE IN ONE HOUR PLS HELP
lons are formed when _____
are transferred between atoms.
How many moles are in a sample of toxic chlorine gas if it occupies a volume of 18 liters, at a temperature of 78 Celsius and a pressure of 11.5 atm?
On the window sill is a potted plant. The plant always seems to lean toward the window. Even though you turn its pot around every morning, by evening you find that it has turned away from the center of the room and towards the window again. Why does this happen?
Answer:
because im trynna get these 5 points
Explanation:
mklnk.m
How many moles are in 25 grams of nitrogen trihydride?
Explanation:
molecules NH3 = 1.47 moles x 6.02x1023 molecules/mole = 8.9x1023 molecules of NH3 (to 2 sig. figs.)
What is the charge of electrons?
Answer:
-1
Explanation:
In a solution, the substance that has been dissolved is called the...
Answer:
solute
Explanation:
The substance being dissolved is called a solute. The thing the solute is being dissolved in is called a solvent.
Which of the following is an electrolyte?
a. PbCl2
b. MgS
c. HNO3
d. Al2(Cr2O7)3
Answer: A: PbCl2
Hope dis helps!
How many grams are in 1.26 moles of HCI?
The answer is 0.027426610504282. We assume you are converting between moles HCl and gram. You can view more details on each measurement unit: molecular weight of HCl or grams This compound is also known as Hydrochloric Acid. The SI base unit for amount of substance is the mole.
i hope this one helps, hehe.
What is the number of moles of a gas inside a 2.7L airbag at a temperature of 421K and pressure of 6.2atm?
Answer:
.48 moles
Explanation
n=PV/RT