3. Calculate the size of the resultant force.

30 N+
40N
20N
30 N
20 N
90 N
40 N

Answer:

17.21°C

Explanation:

Using the following formula;

Q = m × c × ∆T

Where;

Q = amount of heat in joules

m = mass of substance in grams

c = specific heat capacity of water (4.184 J/g°C)

∆T = final temperature - initial temperature

According to the information provided in this question,

Q = 1,785 cal

1 cal = 4.184 J

1785 cal = 7468.4J

m = 343grams

c = 4.18J/g °C

initial temperature = 12°C

Using Q = m × c × ∆T

7468.4 = 343 × 4.18 × (T - 12)

7468.4 = 1433.74(T - 12)

7468.4 = 1433.74T - 17204.88

7468.4 + 17204.88 = 1433.74T

24673.28 = 1433.74T

T = 24673.28 ÷ 1433.74

T = 17.21°C

Answer:

A

Explanation:

It's smaller hole

Answer:

I would say A.

Explanation:

Answer:

Latitudes are used to indicate a precise location of any feature on the earth's surface.

Temperature changes with latitudes .At higher latitudes, the Sun's rays are less direct. The farther an area is from the Equator, the lower its temperature. At the poles, the Sun's rays are least direct.Near the equator sun's rays are perpendicular resulting into very high temperatures. Generally, around the world, it gets warmer towards the equator and cooler towards the poles.

Extinct

When all of the members of species die out it is called extinct

Answer:

I think its the length of its year

Answer:

the length of its year

Explanation:

Answer:

F,Cl,N,I,Se,H

Explanation:

polarity increases as electronegativity increases i guess so that is supposed to be the answer

Answer:

Velocity = Distance Covered÷Time Taken

Velocity = 4000÷8

V = 500

Answer:

94,200 milligrams in 94.2 grams

To get answer multiply 94.2 by 1000.

Answer:

there is 94,200 milligrams in 94.2 grams

Explanation:

hope this helps, because 1,000 milligram is 1 gram

so 1,000x94.2(grams)=94,200

HOPE THIS HELPS A LITTLE

The answer is A. Ka and Kb values of weak acids and weak bases are small.

Answer:

The mass is 20, 89 grams of He.

Explanation:

We calculate the weight of 1 mol of He, from the atomic weight of each element obtained from the periodic table: Weight 1 mol He= 4, 0020602 g. 1 mol He-----4, 0020602 g. 5,22 mol He---x= (5,22 mol He x4, 0020602 g)/ 1 mol He= 20, 89 g

hope this helps also can i get brainliest

The mass of 5.22 mol of He will be 20.84 grams.

We have 5.22 mol of He.

We have to calculate its Mass.

Helium is a chemical element with the symbol He and atomic number 2. It is a gas which is colorless, odorless, tasteless, non-toxic, inert and monatomic.

According to the question -

Number of moles of Helium = 5.22 mol

Now, I mole of Helium will have its mass equal to its Atomic weight. Therefore -

Mass of 1 mole of He = 4.002602 g

So, the mass of 5.2 mol of He will be = 5.2 x 4.002602 = 20.84 grams

Hence, the mass of 5.22 mol of He will be 20.84 grams.

To solve more questions on Mole concept, visit the link below-

https://brainly.com/question/15374113

#SPJ2

Answer:

we need the picture

Explanation:

Answer:

Tension, friction, and normal

Explanation:

Answer:

I think B would be alcohol but A I'm not to sure

Answer:

New pressure = 7.51 atm

Explanation:

Given that,

Initial pressure, P₁ = 4.5 atm

Initial temperature, T₁ = 100°C = 100+273 = 373 K

Final temperature, T₂ = 350°C = 350 + 273 = 623 K

We need to find the new pressure. Using the below relation as follows :

[tex]\dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}\\\\P_2=\dfrac{P_1T_2}{T_1}\\\\P_2=\dfrac{4.5\times 623}{373}\\\\P_2=7.51\ atm[/tex]

So, the new pressure is 7.51 atm.

Answer:

Explanation:

the answer is rabbit fur and chicken feathers i did that and i got it right i did a quiz i am in middle school 7th grade but here you go the answer

Answer:

c i think

Explanation:

Gravitational force is the force between the sun and the Earth keeps the Earth in its orbit. The period of revolution is the time it takes for Earth to complete one orbit.

Gravitational force is a kind of attraction force which acts between the two bodies.

Sun's gravitational force is a 3 dimensional attraction force under which earth is present. And due to centripetal force of sun, orbit of earth is present in the stationary state. Earth revolves around the sun to complete one round of orbit and this motion is known as revolution of earth.

Hence, gravitational force is present between the sun and the earth, and revolution is the time to complete one orbit.

To know more about gravitational force, visit the below link:
https://brainly.com/question/862529

Answer:

Explanation:

The valency of chlorine is 1 .It means that chlorine has seven valence electrons in its valence shell so it gains one electron from others to be stable during chemical reaction. so its valency is 1.

hope it helps :)

Answer:

Mg (NO3)2+ K2CO3 ⇒ Mg CO3 + KNO3

Mg=1 ,N =2, O =6 +3 9 ,K =2 ,C=1 ,  (reactant side)

Mg =1, C = 1  ,O = 3+3 = 6 , K= 1., N =1 (product side)

Mg(NO3)2 + K2CO3  ⇒ Mg CO3 + 2KNO3

Mg =1 , C = 1, O =3+6=9, K = 2 IN product side

ANS:

Mg (NO3)2 +K2CO3 ⇒ MgCO3 +2 KNO3

Explanation:

Explanation:

The two half equations are;

3e + HNO3 → NO

S→ H2SO4 + 6e

When balancing half equations, we have to make sure the number of electrons gained is equal to the number of electrons lost.

Which factor will you use for the top equation?

We multiply by 2 to make the number of electrons =  6e

Which factor will you use for the bottom equation?

We multiply by 1 to make the number of electrons = 6e

Answer:

2

1

Explanation:

Answer:

the number of moles of N_2 required is 5.12 moles

Explanation:

The computation of the number of moles of N_2 required is shown below:

N₂ +  3H₂ → 2NH₃

Here the nitrogen moles and hydorgen would be compared  

NH₃  :  N₂

2 :  1

10.23  : 1 ÷ 2 × 10.23 = 5.12mol

Hence, the number of moles of N_2 required is 5.12 moles

Therefore the same would be considered and relevant too

Answer:

294mL

Explanation:

We can use this equation to find the unknown volume:

[tex]P_1V_1=P_2V_2[/tex]

To solve, plug in the values we have and solve for the unknown value:

[tex](1.10atm)(507mL)=(1.90atm)V_2\\\frac{(1.10atm)(507mL)}{1.90atm} =V_2\\V_2=293.53mL[/tex]

Rounding to three significant figures gives you the value of 294mL

Answer:

In contrast, at each pole, you are only 6357 km from the center of the earth. Since the strength of gravity weakens as you get farther away from a gravitational body, the points on the equator are farther and have weaker gravity than the poles. ... The earth's centrifugal force also varies with latitude.

Explanation:

hope it becomes helpful to you ☺️☺️

good luck

Answer:

Nope, not a chemical change.

Explanation:

i hope this helps ok bye luv!!!!!!!!!!!!!!!!!!!!

Answer:

D) red litmus turns blue​

Explanation:

Took this test, hope it helps! :)

Answer:

15 L

Explanation:

From the question given above, the following data were obtained:

Initial volume (V₁) = 10 L

Initial pressure (P₁) = 1140 torr

Final pressure (P₂) = 1 atm

Final volume (V₂) =?

Recall:

1 atm = 760 torr

The new (i.e final) volume of the gas can be obtained as follow:

Initial volume (V₁) = 10 L

Initial pressure (P₁) = 1140 torr

Final pressure (P₂) = 760 torr

Final volume (V₂) =?

P₁V₁ = P₂V₂

1140 × 10 = 760 × V₂

11400 = 760 × V₂

Divide both side by 760

V₂ = 11400 / 760

V₂ = 15 L

Therefore, the new volume of the gas is 15 L

Answer:

no. Because there is always that one person who doesn't want to

Answer:

Name                        Oxygen

Atomic Mass                 15.999 atomic mass units

Number of Protons 8

Number of Neutrons 8

Number of Electrons 8

Explanation: