Answer:
3 Hz
Explanation:
frequency = [tex]\frac{number of waves}{time}[/tex]
thus [tex]f=\frac{6}{2}[/tex] = 3 Hz
If there are 6 waves in a 2-second time frame, the frequency is 3 Hz. When a wave travels through a medium, the frequency describes how frequently the medium's particles vibrate.
What is the frequency of a wave?The frequency identifies the frequency at which the particles of the medium vibrate as a wave passes through it.
Frequency = number of waves ÷time
The number of waves is 6 and time is 2 second
f = 6 ÷ 2
= 3
A disturbance or variation that causes energy to be transferred gradually from one point to another in a medium. It can be an elastic deformation or a change in pressure, electric potential, electric or magnetic intensity, or temperature.
Therefore, if there are 6 waves in a 2-second time frame, the frequency is 3 Hz.
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calculate the number of moles of magnesium presented in a banana knowing that the one banana contains 422mg=0.422g of Mg and the atomic symbol of Mg is Mg_24
Which of the substances are elements please help
Answer:
Substances 1 and 2
Explanation:
an element only has 1 kind of atoms :3
HELP! What are 5 changes for testing out a fidget spinner no websites
Answer:
Explanation:
Can you explain a bit further? once u do, ill edit my answer and tell you :) But to use a fidget spinner, u have to put ur thumb at the bottom and index finger at the top, and spin it with you other fingers if thats what you meant
Calculate the volume in mL of 53.2 g of .251M solution of HCl.
Answer:
5.813 mL
Explanation:
You need to use the formula : vol = mass / molar mass x molarity
the molar mass of HCl is 36.46 and the problem gives you the rest of the equation
0.251M x 36.46 = 9.151
53.2g / 9.151 = 5.813 mL
*I don't know some of the units so that's why some of them are blank sorry
*I'm also sorry if this is wrong but it's what I did so..
initially 10cm^3 of nitrogen and 24cm^3 of hydrogen are mixed in a container. The temperature and pressure remain constant. Calculate the volume of gas that will remain in the container after the reaction is complete
acrostic words or phrases that describe street dance
Answer nb 1 and 2 to be marked as Brainliest
Answer:
Nb 1= mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
According to the dichotomous key, organism 2 is a
A)
dragonfly nymph
B)
water scorpion
C)
bristle worm.
D)
water mite.
Every animal is composed of a collection of organs, allowing the animal to live. Animals have internal to external skeletons that allow which of the following functions for the animal?
Group of answer choices
Exchange gases
Protect from disease
Take in nutrients
Allow movement
Answer:
Allow movement
Explanation:
The skeleton provides structure and allows the body to move
Xavier was conducting a long term study of two populations of butterflies. Both populations had the same number of individuals. Both populations lived in forests that were the same size. Population A lived in a forest that was full of milkweed, the favorite food of this butterfly species. Population B lived in a forest that had limited amounts of milkweed and other foods. Over many years, Xavier found that one of the populations was showing signs of evolutionary change. Their mouth parts were changing and they could get food from new kinds of plants. Which statement explains why one population would be more likely to evolve in response to natural selection? *
a. Population B would be more likely to change because it has a ready supply of food, and only certain butterflies would be able to survive
b. Population A would be more likely to change because it has a ready supply of food and only certain butterflies would be able to survive
c. Population A would be more likely to change because it has a limited amount of food and some butterflies might be better able to get enough food, survive, and reproduce
d. Population B would be more likely to change because those butterflies have a limited supply of food, and butterflies with certain traits might be better able to get enough food, survive, and reproduce.
SEP Analyze Data Which two columns have identical data? What do these two columns suggest about the identity of elements?
Answer:
The two columns which have identical data are the Atomic number and the number of protons column. This indicates that the atomic number is equivalent to the number of protons in an element.
Explanation:
Atomic Number is given as the number of electrons in an element. As the number of electrons is required to be equal to the number of protons, for the element to exist in the neutral state. This indicates that the atomic number of an element can also be considered equal to the number of protons in that element.
PLEASE HELP
Four students are asked to describe a nebula and a star. Their responses
are shown in the table below. Which student described these two
celestial bodies correctly? *
Student
1
2.
Student Responses
Description of a Nebula
Description of a Star
A collection of hot gases that A sphere of dust and gases that contains
sometimes produces light from many elements and produces light from
nuclear reactions
fusion and fission reactions
A collection of hot gases that
results from stars that have
A collection of gases from several nebulae
exploded
hot enough to cause a nuclear reaction
A collection of dust and gases A sphele of matter with a density and a
that forms stars or results from temperature great enough to cause a
dying stars
nuclear reaction at its center
A collection of dust and gases A collection of hot gases that forms a
that is found near stars
sphere but produces no light
3
4
Student 1
Student 2
Student 3
Student A
Answer:student 3
Explanation:
Which formula can be used to calculate the molar mass of ammonia (NH3)?
Molar mass of N + molar mass of H
3 × molar mass of N + molar mass of H
molar mass of N + 3 × molar mass of H
3 × molar mass of N + 3 × molar mass of H
Answer:
molar mass of N + 3 × molar mass of H
Explanation:
took the test and got it right
Molar mass is the proportion of the mass of the substance to the moles. The molar mass of ammonia is calculated as, the molar mass of N + 3 × molar mass of H. Thus, option c is accurate.
What is molar mass?The molar mass of any substance is the mass in grams divided by the mole of the substance. It is given in g/mol. It is calculated as:
Molar mass = Mass ÷ Moles
In Ammonia there are one nitrogen and three hydrogen atoms, and hence the molar mass is given as,
Molar mass of N + 3 × Molar mass of H
Therefore, option c. molar mass of N + 3 × molar mass of H is correct.
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A sample of gas occupies 3.00 L with 5.00 moles present. What would
happen to the volume if the number of moles is increased to 8.0?
3/5 times 5/3x = 8*3/5. X=24/5 simplified would be x= 4.8 L.
¿Las cargas eléctricas forman parte de los átomos?
Answer:
si. en los atomos los protones y los electrones llevan cargas electricas
A scientist prepares 500.0 L of gas at 0.921 atm pressure
and 200.0°C. The scientist transfers the gas into a tank
where it cools to 20.0°C and has a pressure of 30,0 atm.
What is the volume of the gas under these conditions?
I
Answer:
200.0°C.
Explanation:
The resulatant volume of gas under given conditions is 9.49 liters.
What is ideal gas equation?Ideal gas equation gives idea about the behavior of gases at different conditions and it will be represented as:
PV = nRT, where
P = pressure in atm
V = volume in L
n = moles of gas
R = universal gas constant = 0.082 L.atm/K.mol
T = temperature in K
First we calculate the moles of gas by putting the values according to the first condition in the above equation and we have
n = (0.921)(500) / (0.082)(473) = 11.86 moles
Now we calculate the volume of gas by using the above equation and details of the second condition as:
V = (11.86)(0.082)(293) / (30) = 9.49 L
Hence resultant volume of the gas is 9.49L.
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What is the connection between wildfires and sea ice?
Which two terms or phrases describe the process shown?
A. Low turgor pressure
B. Limp guard cells
I C. Open stomata
D. Transpiration
SUBMIT
Answer:
The answer is C and D
Explanation:
I took the test and these were the answers (sorry this was so late)
PLEASE HURRY I WILL GIVE BRAINYEST What is the correct term for a community of plants and animals and their physical surroundings?
biotic
ecosystem
population
abiotic
Radium decays to form radon. *x26Ra 222 Rn + He 86 This type of nuclear decay is called
Answer: it's alpha decay (α)
Explanation: mass number of mother nucleus decreases by four and number of protons decreases by two. Smaller nucleus is He-4 nucleus.
Answer:
Alpha decay
Explanation:
Got it right on edge
How many lbs are in 1500 g?
2.2lbs= 1 kg. 1 kg= 1000 g
Answer:
Instantly Convert Kilograms (kg) to Pounds (lb av) and Many More Mass Conversions Online. Kilograms ... 1 Kilogram: The kilogram is defined as being equal to the mass of the ... 30 Kilograms to Pounds = 66.1387, 1,000 Kilograms to Pounds = 2204.6226 ... Kilograms to Newtons · Kilograms to Grams · Kilograms to Tonnes ...
Explanation:
what is the chemical reaction for respiration
Respiration is the chemical process by which organic compounds release energy. The compounds change into different ones by exergonic reactions. The hydrolysis of adenosine triphosphate (ATP) to adenosine diphosphate (ADP) and phosphoric acid (Pi) releases energy (it is an exergonic reaction).
Balance the following chemical
equation by providing the correct
coefficients.
Answer:
1 Pb(NO3)2 + 1 Na2CrO4 -> 1 PbCrO4 + 2 NaNO3
In a closed system, the total energy before an energy transformation is _______ the total energy after it.
Answer:
In a closed system, the total energy before an energy transformation is __equal to__ the total energy after it.
Explanation:
The Law of Conservation of Energy
((Also Study Island))
How does food storage benefit from electricity?
Food can be store in warm containers run by electricity.
Food can be stored in cold containers run by electricity.
Food can be cooked using electricity.
Food can be stored and locked storage using electricity.
ionic bonding is formed between the atoms of______ and ______?
Answer: metal and non- metal
Explanation: metals form cations and non-metals anions which form ionic bond.
Is this correct ? I need help
Yes i have done that before on paper but yes its right
What color would the methyl orange indicator turn in a solution with a pH of 2?
Answer:
The answer is red.
Explanation:
Methyl orange is an organic dye that used as an indicator in acid-base titrations because its color is changed according to pH of the medium (acidic, neutral or basic).Methyl orange is red in acidic solutions, orange in neutral solutions, and yellow in basic solutions.Since pH of the solution is 2, the solution is acidic, the color of the solution will be red.
How many moles are in 5NO3?
Answer:
200
Explanation:
more molecules thats all i know
How many moles are in 25.0 grams of HF?
Answer:
Hey mate.....
Explanation:
This is ur answer.....
So,
If one mole has a mass of 18 grams, 25 grams would have a mass of 25 grams/ 18 grams per mole or 1.39 moles.
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Answer:
1.39 moles............