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3 years ago

1. When calculating Net Force, which direction does the Total Net Force go?

1 answer:

4 0

Forces Acting in Opposite Directions
In general, whenever forces act on an object in opposite directions—like the book on the table—the net force is equal to the difference between the two forces. In other words, one force is subtracted from the other to calculate the net force.

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In the preindustrial era, settlements were more likely to be near sources of surface water than in the industrial era.

Ksenya-84 [330]

True that in the preindustrial era, settlements were more likely to be near sources of surface water than in the industrial era. The main reason being that during the preindustrial era people were dependent mostly on irrigation. For irrigation people were dependent on surface water. This was the main and basic reason.

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3 years ago

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An object becomes positively charged when it

qwelly [4]

Answer:

When electrons are removed from an object, it becomes positively charged

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3 years ago

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A vessel with a volume of 32. 5 l contains 2. 80 g of n2 gas, 0. 403 g of h2 gas, and 79. 9 g of ar gas. at 25°c, what is the to

d1i1m1o1n [39]

The total pressure of the gases in the vessel is found out by using the partial pressures of individual gases and adding them up. The total pressure of the gases in the vessel is 1.72 atm.

The Partial pressure of the gases is the individual pressure of the gases present in a vessel containing a mixture of gases. The total pressure can be found out by adding partial pressure of all gases.

Given:

Volume of vessel, V= 32.5L

Mass of Nitrogen gas = 2.8g

Mass of Hydrogen gas = 0.403g

Mass of Argon gas = 79.9g

We know that:

Molar Mass of Nitrogen gas = 28g

Molar Mass of Hydrogen gas = 2g

Molar Mass of Argon gas = 40g

∴ Moles of gas = Given mass / Molar mass

∴ Using the Ideal Gas Equation:

PV = nRT

where, P is the Pressure of gas

V is the volume of gas

n is the moles of gas

R is the Universal Gas constant

T is the temperature

Applying the above equation of all three gases indivudually,

∴ For Nitrogen,

P₁V = n₁RT

⇒ P₁ × 32.5 = 2.8/28 × 0.082 × 298

⇒ P₁ = 0.07atm

∴ For Hydrogen,

P₂V = n₂RT

⇒ P₂ × 32.5 = 0.4/2 × 0.082 × 298

⇒ P₂ = 0.15 atm

∴ For Argon,

P₃V = n₃RT

⇒ P₃ × 32.5 = 79.9/40 × 0.082 × 298

⇒ P₃ = 1.5 atm

∴ Total pressure of vessel, P = P₁ + P₂ + P₃

P = 1.72 atm

The total pressure of the gases in the vessel is 1.72 atm.

Learn more about Partial pressure here, brainly.com/question/23841760

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1 year ago

How many moles of Na are in 11.9 grams of Na

hram777 [196]

Answer:

sdgas

Explanation:

as dggsda

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3 years ago

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According to this decay series chart, which is the proper order of nuclear particle emission that occurs during the transition f

viva [34]

Explanation:

An alpha particles is basically a helium nucleus and it contains 2 protons and 2 neutrons.

Symbol of an alpha particle is $^{4}_{2}\alpha$ .

A beta particle is a particle with a negatively charged electron. Symbol of a beta particle is $^{0}_{-1}\beta$ .

According to the given question, the decay series chart along with reaction equation are as follows.

(a) Lead-214 changes to bismuth-214.

$^{214}_{82}Pb \rightarrow ^{214}_{83}Bi + ^{0}_{-1}e$

(b) Bismuth-214 changes to polonium-214.

$^{214}_{83}Bi \rightarrow ^{214}_{84}Po + ^{0}_{-1}e$

(c) Polonium-214 changes to lead-210.

$^{214}_{84}Po \rightarrow ^{210}_{82} + ^{4}_{2}He$

Therefore, we can conclude that proper order of nuclear particle emission is beta, beta, alpha.

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3 years ago