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ElenaW [278]
2 years ago
5

Compare the kinetic energies of a ball moving at 5 m/s to when it is moving

Physics
1 answer:
Fantom [35]2 years ago
5 0

Answer:

B

Explanation:

KE = mv²/2

The more velocity (speed) is, the more kinetic energy an object has.

Because 10 m/s > 5 m/s,  KE at 10 m/s > KE at 5 m/s.

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Andre45 [30]
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5 0
2 years ago
What is the loudness, in decibels, of a sound 1 trillion times as loud as the softest audible sound?
Rufina [12.5K]

Answer:

What is the loudness, in decibels, of a sound 100 trillion times as loud as the softest audible sound? The loudness of this sound in decibels is dB. (Type an integer or a decimal.)

5 0
3 years ago
A ball is thrown vertically upward with a velocity of 115m/s. Show work
zaharov [31]

Are you familiar with that?



4 0
3 years ago
An engineer examining the oxidation of SO 2 in the manufacture of sulfuric acid determines that Kc = 1.7 x 108 at 600 K:
kozerog [31]

Answer: p_{SO_2}=0.017atm

Explanation:

We are given:

K_c=1.7\times 10^8

Relation of K_p with K_c is given by the formula:

K_p=K_c(RT)^{\Delta ng}

Where,

K_p = equilibrium constant in terms of partial pressure = ?

K_c = equilibrium constant in terms of concentration

R = Gas constant = 0.0821\text{ L atm }mol^{-1}K^{-1}

T = temperature = 600K

2SO_2(g)+O_2(g)\rightleftharpoons 2SO_3(g)

\Delta ng = change in number of moles of gas particles = n_{products}-n_{reactants}=2-3=-1

Putting values in above equation, we get:

K_p=1.7\times 10^8\times (0.0821\times 600)^{-1}\\\\K_p=3.4\times 10^6

The chemical reaction follows the equation:

                 2SO_2(g)+O_2(g)\rightleftharpoons 2SO_3(g)

The expression for K_p for the given reaction follows:

K_p=\frac{(p_{SO_3})^2}{ p_{O_2}\times {(p_{SO_2})^2}}

We are given:

p_{SO_3}=300atm   p_{O_2}=100atm

Putting values in above equation, we get:

3.4\times 10^6=\frac{(300)^2}{100\times {(p_{SO_2})^2}}

p_{SO_2}=0.017atm

Hence, the partial pressure of the SO_2 at equilibrium is 0.017 atm.

3 0
3 years ago
Which sequence correctly shows how stars form?
Romashka-Z-Leto [24]
The correct answer is <span>nebula forms → nebula collapses → protostar forms → fusion begins</span>
7 0
3 years ago
Read 2 more answers
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