Un vehículo inicia su recorrido desde el reposo, al cabo de 30 segundos tiene una velocidad de 120 m/s. ¿Cuál es la aceleración que trae dicho vehículo?

Answer:

D

Explanation:

I took that.

Answer:b

Explanation:

Correct dot

Answer:

The amount of energy that would be burnt in climbing stairs all day is approximately 52,738,560 Joules

Explanation:

The question is with regards to an experiment with details that can be obtained from the U Oregon website

The given parameters of the question are;

The energy consumed by a human each day =  2,500 kcal = 10,450,000 J

The required parameters obtained from U Oregon website are;

The average weight of a student, W ≈ 60 kg × 9.81 m/s² = 588.6 N

The average time it takes a student to run up a flight of stairs = 5.4 s

The height of the stairs, h = 0.2 m × 28 = 5.6 meters

Therefore, we get;

Work done in climbing up the stares = W × h = 588.6 N × 5.6 meters = 3,296.16 J

The height the student can climb in a day is given as follows;

The time of 1 day in seconds, t = 86,400 s

The height the student climbs in 5.4 s = 5.6 m

∴ Vertical velocity, [tex]v_y[/tex] = 5.6 m/(5.4 s) = (28/27) m/s

The vertical height the student climbs in a day, [tex]h_{(v \, all \, day)}[/tex] = [tex]v_y[/tex] × t

∴ [tex]h_{(v \, all \, day)}[/tex] = (28/27) m/s × 86,400 = 89,600 m

The work done all day = W × [tex]h_{(v \, all \, day)}[/tex] = 588.6 N × 89,600 m = 52,738,560 J

The amount of energy in joules that would be burnt in climbing stairs all day = The work done all day = 52,738,560 Joules

the answer would be 150 m because you just add 60 and 90

Answer:

The answer is below

Explanation:

Ketone is a class of organic compounds which has a carbonyl group such that the carbon atom is covalently bonded to an oxygen atom, while the remaining two bonds are to other carbon atoms or hydrocarbon radicals.

Ketones are highly reactive hydrocarbons, they can be gotten from the oxidization of secondary alcohols. Ketone are used for medicinal applications.

The third option is the ketone

it’s the the last 2 choices

1. Closest

2. Million

3. All

4. Sunlight

5. Heat

6. Are

7. Faster

8. Million billion

9. Protection

10. Moon

11. Never

12. Tiny

13. Living

14. Explosions

15. Solar

Have a nice day!

Answer:

1. Closest

2. Million

3. All

4. Sunlight

5. Heat

6. Are

7. Faster

8. Million billion

9. Protection

10. Moon

11. Never

12. Tiny

13. Living

14. Explosions

15. Solar

give the other person brainliest

have a good day :)

Explanation:

Answer:

Yes

Explanation:

The genetic testing is also called as the DNA testing. It is mainly used for identifying the changes in the DNA sequence or the chromosomes structure. It can also measure the results in the genetic changes.

Couples those who are planning to start a family should go for a genetic testing so as to minimize a risk in the upbringing or growth of their offspring. By doing a genetic testing a couple can well know the conditions of the baby that could affect them. The result from a genetic testing can help to plan better before starting a family. Therefore, it is advisable for couples to go for a genetic testing so that they plan better by knowing the conditions.

Answer:

c) 3570000

Explanation:

The standard form is a way to simplify too long or too short numbers. Standard form uses powers of ten to contract numbers.

x × 10^n

Where;

x = decimal number between 1.0 - 10.0

n = power of 10

According to this question, a number already in standard form is given as 3.57 x 10^6.

To convert to its long form, we count forward the power of ten beginning from where the decimal is. In this case, we're counting 6 times Note that once the decimal is after 7, we start placing zero (0) instead. Based on this, we have;

3.57 x 10^6

1st count = 35.7

2nd count = 357

3rd count = 3570

4th count = 35700

5th count = 357000

6th count = 3570000

Hence, the long form of the number 3.57 x 10^6 is 3570000.

Answer:

C. 9.70

Explanation:

Hello,

This problem is a simple dilution problem which utilizes the formula M1V1= M2V2 (where M is molarity, V is volume). I have attached a helpful image as well.

M1 V1 = M2 V2

(18) (x) = (0.35) (500)

x = 9.72mL which is close enough to option C.

Answer: Heat energy contained by water is 130.625 J.

Explanation:

Given: Mass = 1.25 g

Specific heat = [tex]4.18 J/g^{o}C[/tex]

Initial temperature = [tex]20.0^{o}C[/tex]

Final temperature = [tex]45.0^{o}C[/tex]

Formula used to calculate heat energy is as follows.

[tex]q = m \times C \times (T_{2} - T_{1})[/tex]

where,

q = heat energy

m = mass of substance

[tex]T_{1}[/tex] = initial temperature

[tex]T_{2}[/tex] = final temperature

Substitute the values into above formula as follows.

[tex]q = m \times C \times (T_{2} - T_{1})\\= 1.25 g \times 4.18 J/g^{o}C \times (45.0 - 20.0)^{o}C\\= 130.625 J[/tex]

Thus, we can conclude that heat energy contained by water is 130.625 J.

Answer:

North America) than in the tropics. Since low pressure systems spin in a counterclockwise fashion, winds move from the west to the east, propelling weather systems to the east. Another MAJOR factor that drives weather systems in the U.S. is that the Jet Steam moves from West to East across North America.

Explanation:

I hope this helped

(Sorry If it didn't)

Answer:

D. Hydrogen and chlorine

Explanation:

Answer:

d

Explanation:

hydrogen and chlorine

is the compound of hydrochloric acid

Answer:

concave lens

Explanation:

it's concave lens because it diverges the ray/beam of light.

Concave lens

There are 2 types of lens

Answer: B2Br6 + 6HNO3 → 2B(NO3)3 + 6BrH

Equation

B2Br6+HNO3=B(NO3)3+HBr

B=2                                 B=1

BR=6                             BR=1

H=1                                  H=1

N=1                                  N=3

O=3                                 O=9

ANSWER

B2Br6 + 6HNO3 → 2B(NO3)3 + 6BrH

B=2                                 B=2

BR=6                             BR=6

H=6                                  H=6

N=6                                  N=6

O=18                                 O=18

HOPE THIS HELPS

Answer:

Square

Explanation:

A square is a quadrilateral with r sides the same length

Answer:

Jupiter and Saturn are the two biggest planets

Answer:

1.13 L

Explanation:

First, we have to write the chemical equation for the reaction between ammonia gas (NH₃) and oxygen gas (O₂) to give nitrogen gas (N₂) and water (H₂O), as follows:

NH₃(g) + O₂(g) → N₂(g) + H₂O(g)

Then, we have to balance the equation (we write first the coefficient 2 for NH₃ to balance N atoms, then a coefficient of 3 for H₂O to balance H atoms, and finally 1/3 to balance the O atoms):

2 NH₃(g) + 3/2 O₂(g) → N₂(g) + 3 H₂O(g)

In the balanced equation, we can see that 1 mol of N₂ is produced from 2 moles of NH₃. We convert the moles of NH₃ to grams by using its molecular weight (MW):

MW(NH₃) = 14 g/mol N x 1 + (1 g/mol H x 3) = 17 g/mol

grams of NH₃ = 17 g/mol x 2 = 34 g

Thus, we have the stoichiometric ratio:

1 mol of N₂/2 mol NH₃ = 1 mol of N₂/34 g NH₃

To calculate how many moles of N₂ are produced from 4.0 of NH₃, we multiply the mass by the conversion factor:

4.0 g NH₃ x 1 mol of N₂/34 g NH₃ = 0.1176 moles N₂

Finally, we calculate the liters of N₂ gas by using the ideal gas equation:

PV = nRT ⇒ V = nRT/P

We introduce the data in the equation:

T = 32.00°C + 273 = 305 K

P = 2.6 atm

R = 0.082 L.atm/K.mol (is the gas constant)

n= 0.1176 moles

⇒ V = nRT/P = (0.1176 mol x 0.082 L.atm/K.mol x 305 K)/(2.6 atm)

                     = 1.13 L

Answer:

Explanation:

A covalent compound is a compound formed by covalent bonds. A covalent bond is formed between two atoms where electrons are shared between the two atoms. This forms a molecule.

What determines whether two elements will form a covalent compound or not is the number of valence electrons present in each of the elements.

Fluorine will form a covalent compound with phosphorous because fluorine has 5 electrons in its outermost shell. It needs 3 more to become stable.

Phosphorous also has 5 valence electrons. It needs 3 more to become stable.

What happens is that 3 atoms of FLuorine combine with one atom of Phosphorus, sharing the valence electrons between themselves. This leads to the formation of the PF3 molecule.

Both the Phosphorous and the Fluorine are now stable.

Answer: Phosphorus

Explanation: since both are non-metals they would both create a covalent bond.

Answer:

The nuclear fuel used in a nuclear reactor needs to have a higher concentration of the U 235 isotope than that which exists in natural uranium ore. U235 when concentrated (or "enriched") is fissionable in light-water reactors (the most common reactor design in the USA).

Explanation:

Answer:

1.8 L

Explanation:

According to Avogadro;

1 mole of CH4 contains 6.02 * 10^23 molecules of CH4

x moles of CH4 contains 2.50 x 10^22 molecules of CH4

x = 1 * 2.50 x 10^22 molecules/ 6.02 * 10^23 molecules

x = 0.04 moles of CH4

2 moles of H2 yields 1 mole of CH4 gas

x moles of H2 gas yields  0.04 moles of CH4

x = 2 moles * 0.04 moles / 1mole = 0.08 moles of H2

x = 0.08 moles of H2

Since 1 mole of H2 occupies 22.4 L

0.08 moles of H2 occupies 0.08 moles * 22.4 L/ 1 mole

= 1.8 L

Answer: Tires air condenses and when it condenses it takes up less room.

Explanation: Hope that helps!

Answer:

I believe its F: 2.55

Explanation:

I know I'm very late, positive you're past this question, I'd hope at least.

Answer:

2m.

Explanation:

molality = no.of moles of solute ÷ mass of solvent in kg

molalty = 1.5 moles ÷ 0.75 g

            = 2m

Answer:

memorise them

Explanation:

1, 2, skip metals, 3, 0, -3, -2, -1

Answer:

The solid crystals disappeared

Explanation:

When a soluble solid solute is added to water, the solid solute disappears after a little while. The disappearance of this solute indicates that the solute has been dissolved in water.

In this case, blue copper sulphate crystals are added to water, the blue crystals disappear leaving only a blue solution. The disappearance of these blue copper sulphate crystals indicates that the substance has dissolved in water.

Answer:

A. LiCl

Explanation:

Lithium chloride is an ionic compound but it also has some covalent character due to the very small size of lithium metal.

Ionic solids are formed between a metal and a nonmetal. Among the given options, option A, LiCl is an example of ionic solid formed from lithium metal and chlorine.

Ionic compounds are formed between metals and non-metals. Metals are electron rich and easily loss electrons. Non metals are mostly electron deficient and gain electron from metals.

Lithium is an alkali metal with one valance electron. Cl is 17th element with 7 valence electrons. Cl needs one more electron to achieve octet. Li donates its valence electron to Cl, and gains a positive charge and Cl gains a negative charge by accepting the electron.

The opposite charges between the atoms gets attracted electrostatically forming ionic bond between them and the compound LiCl results. HCl is a covalent compound. Ne and Fe are pure metals and not ionic solids. Hence, option A ic correct.

Find more on ionic solids:

https://brainly.com/question/29629371

#SPJ2

Answer:

all of the above

Explanation:

Answer:

All of the above

Explanation:

Prior to the montreal CFC production ban, all of these products released CFCs into the atmosphere. Some old air conditioner still release CFC so please be sure to dispose of them as CFC kills the ozone layer.

Answer:

A is your answer