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A commercial heat pump has CP=3 when the indoor temperature is 20°C and the outdoor temperature is 6°C. How much work is
0 answers
596 views
A nuclear plant on a submarine produces steam at 350C to drive a steam electric turbine. the temperature on the low side of the
0 answers
571 views
Compute the entropy change of a system consisting of 1kg of ice at 0•C which melts (reversibly) to water at the same
0 answers
685 views
An ideal gas at 17•c has a
pressure of 760 mmHg and is compressed adiabatically until its volume is halved.Calculate final
1 answer
719 views
An ideal gas at 17•c has a
pressure of 760 mmHg and is compressed adiabatically until its volume is halved.Calculate final
0 answers
583 views
Alex bought 9 mo I'd tickets for. Total cost of $9.00. Each child's ticket cost $2 and each adult ticket cost $4. How many
3 answers
525 views
two pith balls each of mass 2 mg are suspended by very light thread of 20 cm long from a common pt. each ball has the same
0 answers
621 views
A grinding wheel 0.3m in diametre has amass of 5kg is rotating at an angular velocity of 2300rev/min.what is the kinetic energy?
0 answers
389 views
According to Robert Nozick, the state is justified to tax a citizen (even against his or her will) if:
a) the revenues support
3 answers
3,048 views
Which of these processes will lower the glass transition temperature of a glass?
1 - Increase the cooling rate 2 - Decrease the
1 answer
415 views
In ancient Rome, Christians were fed to the lions in a public spectacle intended to entertain the masses. Which of the following
4 answers
2,461 views
Which of the following cranial nerve nuclei is a branchial motor nucleus and is, therefore, found in an intermediate position in
1 answer
907 views
What type of cell in the central nervous system play an important role in the uptake and processing of neurotransmitters from
1 answer
1,129 views
Which of the following arteries contributes to the anterior circulation of the brain?
anterior inferior cerebellar artery basilar
1 answer
1,289 views
As should be clear from reviewing the midsagittal plane through the brain, which statement below most accurately describes the
0 answers
562 views
Theme A: Surface anatomy of the brain
Of the following pairs of directional terms, which pair contains terms that define
2 answers
2,410 views
In conventional human radiological imaging (e.g., MRI, PET, CT) of the head, the axial plane is synonymous with the horizontal
3 answers
2,814 views
A glass of composition 85% SiO2 - 15% K2O is to be surface strengthened by ion exchange. To this end, two identical specimens
1 answer
592 views
Which of these processes will lower the glass transition temperature of a glass?
1.Increase the cooling rate 2.Decrease the
1 answer
500 views
Please mark below all of the statments that correctly describe the physical properties of glass:
1.Glasses do not have slip
3 answers
597 views
Explain prisms
1 answer
356 views
Answers (8)
checked, its 3960
The teachers(?) don't say the answers, they help the students come to the answer.
The **** indicates the guess.
Guess Rivers don't exist...
The fact people got angry as Ms. Sue for being unable to help, without Ms. Sue knowing anything is kinda rude.
i'll get back to you
E[X]=7.5 E[X^2]=98.5 a=0.071 b=0.467
If anybody knows how to get the E[X^2] can you enlighten us please? I am just really thrown off by the fact that it has 2 ways of measuring X.
