can someone help me with this! because it have no idea what i’m doing feel free to solve anyone of these. THANK YOU
Answers
Answer:
1. 250 J
2. 500000 J
3. 146250 J
4. 400 J
Explanation:
1. Determination of the energy of the ball.
Mass (m) = 5 Kg
Velocity (v) = 10 m/s
Energy (E) =?
E = ½mv²
E = ½ × 5 × 10²
E = 2.5 × 100
E = 250 J
2. Determination of the energy of the rock.
Mass (m) = 250 Kg
Height (h) = 200 m
Acceleration due to gravity (g) = 10 m/s²
Energy (E) =?
E = mgh
E = 250 × 10 × 200
E = 500000 J
3. Determination of the energy of the car.
Mass (m) = 1300 Kg
Velocity (v) = 15 m/s
Energy (E) =?
E = ½mv²
E = ½ × 1300 × 15²
E = 650 × 225
E = 146250 J
4. Determination of the energy of the bullet.
Mass (m) = 0.005 Kg
Velocity (v) = 400 m/s
Energy (E) =?
E = ½mv²
E = ½ × 0.005 × 400²
E = 0.0025 × 160000
E = 400 J
Answer:
Sorry for the late answer but
Number 1 is 250 J
Number 2 is 500000 J
Number 3 is 146250 J
Number 4 is 400 J
Explanation:
Related Questions
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
Answers
Answer:student 3
Explanation:
Which of the substances are elements please help
Answers
Answer:
Substances 1 and 2
Explanation:
an element only has 1 kind of atoms :3
What color would the methyl orange indicator turn in a solution with a pH of 2?
Answers
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.
Is this correct ? I need help
Answers
Yes i have done that before on paper but yes its right
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
Answers
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.
Learn more about molar mass here:
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Which two terms or phrases describe the process shown?
A. Low turgor pressure
B. Limp guard cells
I C. Open stomata
D. Transpiration
SUBMIT
Answers
Answer:
The answer is C and D
Explanation:
I took the test and these were the answers (sorry this was so late)
Radium decays to form radon. *x26Ra 222 Rn + He 86 This type of nuclear decay is called
Answers
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
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?
Answers
3/5 times 5/3x = 8*3/5. X=24/5 simplified would be x= 4.8 L.
Calculate the volume in mL of 53.2 g of .251M solution of HCl.
Answers
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..
ionic bonding is formed between the atoms of______ and ______?
Answers
Answer: metal and non- metal
Explanation: metals form cations and non-metals anions which form ionic bond.
SEP Analyze Data Which two columns have identical data? What do these two columns suggest about the identity of elements?
Answers
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.
How many moles are in 5NO3?
Answers
Answer:
200
Explanation:
more molecules thats all i know
In a closed system, the total energy before an energy transformation is _______ the total energy after it.
Answers
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 many lbs are in 1500 g?
2.2lbs= 1 kg. 1 kg= 1000 g
Answers
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:
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
Answers
Ecosystems consist of biotic factors and abiotic factors.
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
Answers
the molar mass of magnesium is 24.31
so n = 0.422 / 24.31
which = 0.0174 mol
What is the connection between wildfires and sea ice?
Answers
what is the molarity of a solution that contains 4.42 moles of Rubidium nitrate in 3.0 liter solution
Answers
Answer:
The molarity of the solution is 1.473 [tex]\frac{moles}{liter}[/tex].
Explanation:
Molar concentration is a measure of the concentration of a solute in a solution, be it some molecular, ionic or atomic species.
So, Molarity or Molar Concentration is the number of moles of solute that are dissolved in a certain volume.
Molarity is determined by:
[tex]Molarity=\frac{number of moles of solute}{volume}[/tex]
Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].
In this case:
number of moles of solute= 4.42 molesvolume= 3 LReplacing:
[tex]Molarity=\frac{4.42 moles}{3 L}[/tex]
Molarity= 1.473 [tex]\frac{moles}{liter}[/tex]
The molarity of the solution is 1.473 [tex]\frac{moles}{liter}[/tex].
Answer nb 1 and 2 to be marked as Brainliest
Answers
Answer:
Nb 1= mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
Balance the following chemical
equation by providing the correct
coefficients.
Answers
Answer:
1 Pb(NO3)2 + 1 Na2CrO4 -> 1 PbCrO4 + 2 NaNO3
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
Answers
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.
To know more about ideal gas equation, visit the below link:
https://brainly.com/question/555495
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¿Las cargas eléctricas forman parte de los átomos?
Answers
Answer:
si. en los atomos los protones y los electrones llevan cargas electricas
HELP! What are 5 changes for testing out a fidget spinner no websites
Answers
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
How many moles are in 25.0 grams of HF?
Answers
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.
Hope it helps!
mark me brainliest plz.....
Follow me! :)
Answer:
1.39 moles............
What is the net force acting on a 3000g sled that accelerated at 5 m/s2 ?
Answers
Answer:
15 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question
3000 g = 3 kg
We have
net force = 3 × 5 = 15
We have the final answer as
15 NHope this helps you
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
Answers
what is the chemical reaction for respiration
Answers
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).
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.
Answers
According to the dichotomous key, organism 2 is a
A)
dragonfly nymph
B)
water scorpion
C)
bristle worm.
D)
water mite.
Answers
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
Answers
Answer:
Allow movement
Explanation:
The skeleton provides structure and allows the body to move