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Serga [27]
4 years ago
13

In a(n) BLANK , the matter’s identity stays the same.

Physics
1 answer:
irina1246 [14]4 years ago
5 0
Matter the same thing is gas or come dioxide
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You are using a bucket of water in a science experiment. You conclude that water is a liquid because
Harrizon [31]
Well you could see it's physical properties have the same descriptions corresponding to a liquid. (Sorry if this doesn't help you..)
8 0
4 years ago
A truck traveling at 80 mph runs into a bridge abutment and crumples for 0.8 m before coming to a full stop. If we estimate the
Anettt [7]

U = 80mph = 35.76m/s

S = 0.8m

M = 3500kg

To find the deceleration, we use equation of motion to calculate that

V² = u² + 2as

But v = 0

0 = u² + 2as

-U² = 2as

a = -u² / 2s

a = -(35.76)² / (2 * 0.8)

a = 1278.78 / 1.6 = 799.24 m/s²

The force exerted on the truck during deceleration is equal to the summation of all the forces acting on the truck.

∑F = m. ⃗a

-F = 3500 * 799.24

F = -2797331.25N

F = -2797.33kN

F = -2.797MN.

5 0
3 years ago
Which of the following has the most momentum? proton (m=1.67 x 10-27 kg) moving at 2.0 x 104 m/s,an electron (m=9.11 x 10-31 kg)
Tom [10]

Answer:

The North American tectonic plate.

Explanation:

recall the formula for momentum: p = m * v

the subatomic particles have very small masses while high speeds, so the product results in values with negative exponents in scientific notation.

Negative exponents also result for the house fly when converting mg into kg (10^-6).

The positive exponents in scientific notation for the momentum come for the gigantic mass of the continental plate which exceeds the negative exponents contributed by the small velocity.

5 0
3 years ago
If sodium has one valence electron and sulfur has six, how many sodium atoms are needed to form an ionic bond with sulfur?
Luden [163]

Answer: two

Explanation:

6 0
3 years ago
Read 2 more answers
Let k be the Boltzmann constant. If the configuration of the molecules in a gas changes so that the multiplicity is reduced to o
katen-ka-za [31]

Answer:

ΔS =  - k ln (3)

Explanation:

Using the Boltzmann's expression of entropy, we have;

S = k ln Ω

Where;

S = Entropy

Ω = Multiplicity

From the question, the configuration of the molecules in a gas changes so that the multiplicity is reduced to one-third its previous value. This also causes a change in the entropy of the gas as follows;

ΔS = k ln (ΔΩ)

ΔS = kln(Ω₂)  - kln(Ω₁)

ΔS = kln(Ω₂ / Ω₁)              -------------(i)

Where;

Ω₂ = Final/Current value of the multiplicity

Ω₁ = Initial/Previous value of the multiplicity

Ω₂ = \frac{1}{3} Ω₁         [since the multiplicity is reduced to one-third of the previous value]

Substitute these values into equation (i) as follows;

ΔS = k ln (\frac{1}{3} Ω₁ / Ω₁)

ΔS = k ln (\frac{1}{3})

ΔS = k ln (3⁻¹)

ΔS =  - k ln (3)

Therefore, the entropy changes by - k ln (3)

4 0
3 years ago
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