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STatiana [176]
2 years ago
7

Nodes give a vertebrate’s back flexibility. A. True B. False

Physics
2 answers:
Elis [28]2 years ago
8 0
B- False it
invertebrates have flexibility ( octopuses and squids are good example of invertebrates)
Lapatulllka [165]2 years ago
5 0
No B. its false<span> they do not. Lyphnodes are a permant part of the body and you have them in your Neck</span>
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3 0
3 years ago
What is he total resistance?<br> A. 20 ohms<br> B. 90 ohms<br> C. 40 ohms<br> D. 30 ohms
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Read 2 more answers
As a system expands, it absorbs 52.5 J of energy in the form of heat from the surroundings. The piston is working against a pres
Kaylis [27]

Answer:

Vi = 0.055 m³ = 55 L

Explanation:

From first Law of Thermodynamics, we know that:

ΔQ = ΔU + W

where,

ΔQ = Heat absorbed by the system = 52.5 J

ΔU = Change in Internal Energy = -102.5 J (negative sign shows decrease in internal energy of the system)

W = Work Done in Expansion by the system = ?

Therefore,

52.5 J = - 102.5 J + W

W = 52.5 J + 102.5 J

W = 155 J

Now, the work done in a constant pressure condition is given by:

W = PΔV

W = P(Vf - Vi)

where,

P = Constant Pressure = (0.5 atm)(101325 Pa/1 atm) = 50662.5 Pa

Vf = Final Volume of System = (58 L)(0.001 m³/1 L) = 0.058 m³

Vi = Initial Volume of System = ?

Therefore,

155 J = (50662.5 Pa)(0.058 m³ - Vi)

Vi = 0.058 m³ - 155 J/50662.5 Pa

Vi = 0.058 m³ - 0.003 m³

<u>Vi = 0.055 m³ = 55 L</u>

7 0
3 years ago
A. B. C. D.<br> -___________
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A tennis player's racket applies an average force of 200. newtons to a tennis ball for 0.025 second. The average force exerted o
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Answer:

200N

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6 0
3 years ago
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