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2 years ago

What is the importance of a reference point when looking at motion

1 answer:

8 0

<span>It is important to use a fixed common reference point on your work peace or drawing to avoid cumulative error</span>

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Thermodynamic Processes

goblinko [34]

Answer:

A. Part a is the attachment

B. total work = 10.4kj

Explanation:

$workdone=nRT1ln\frac{Vb}{Va}$

T1 = constant temperature

nRT1 = PaVa = PbVb

We write equation as

$workdone =(PaVa)ln\frac{Vb}{Va}$

5ma = Pa, 5L = Va, Vb = 10L(temperature is doubled)

$w1 = workdone =(5mpa*5L)ln\frac{10L}{5L}$

W1 = 25 ln2

W1 = 25 x 0.693

= 17.327kj

The isochoric expansion has no change in volume. So,

W2 = 0

Isothermal compression

$w3=nRT3ln\frac{Vd}{Vc}$

T3 = constant temperature

nRT3 = PcVc = PdVd

$workdone=(PcVc)ln\frac{Vd}{Vc}$

Pc = 1mpa Vc = 10L Vd = 5L

$w3=(1)(10)ln\frac{5L}{10L}$

= 10x-0.693

= -6.93kj

Isochoric compression has no change in volume. Workdone w4 = 0

Total workdone = w1 + w2 + w3 + w4

= 17.33 + 0 + (-6.93) + 0

= 10.4kj

5 0

2 years ago

What can be added to an atom to cause a nonvalence electron in the atom to temporarily become a valence electron

Inessa05 [86]

Answer:

providing energy to an atom can allow the electron in its non valence shell to obtain energy and move to a higher energy orbital and act as a valence electron.

Explanation:

8 0

3 years ago

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A convex lens can produce a real image but not a viral image<br> a. true<br> b. false

serious [3.7K]

The answer is true a convex lens can produce a real image but not a viral image

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3 years ago

I need help

valkas [14]

Answer:

u make no sense can u just show a picture

Explanation:

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2 years ago

Define fractional distillation

Serga [27]

Answer:

separation of a liquid mixture into fractions differing in boiling point (and hence chemical composition) by means of distillation, typically using a fractionating column.

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2 years ago

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