PHYSICS HIGH SCHOOL

A gas has an initial volume of 168 cm3 at a temperature of 255 K and a pressure of 1.6 atm. The pressure of the gas decreases to 1.3 atm, and the temperature of the gas increases to 285 K.What is the final volume of the gas?

Answers

Answer 1
Answer: P1V1/T1 = P2V2/T2

(1.6atm)(168cm^3)/(255K) = (1.3atm)V2/(285K)

Final volume = 231cm^3
Answer 2
Answer:

Answer:

D). 231 cm3 is your answer

Explanation:

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Solar energy is: expensive renewable inefficient during winter all of the above

Answers

All of the above is the right answer for Odesseyware.

Solar energy is free and renewable.  

Its efficiency is determined by the photovoltaic or heat-exchanging equipment used, and the efficiency of the infrastructure built to interconnect them.  None of that depends on the time of the year.  For a given amount of solar energy absorbed by the collector, the amount of useful output energy doesn't change with the season.

16. The spreading of sound waves around openings in barriers is called A. reverberation.
B. an echo.
C. diffraction.
D. refraction.

Answers

C. diffraction
Diffraction by description is occurrence where the sound wave is interrupted or interacts with certain obstructions or barriers. According to Huygens-Fresnel principle, it is where the waves are interfered by said circumstances during its travel in the confined specific space. Furthermore, the amount of size the wavelength is directly proportional to its interacted slit or barrier thus, these behaviors and amount are positively correlated. Moreover, it occurs in a variety of waves –may it be sound waves, water waves or electromagnetic waves.



The Hubble telescope’s orbit is 5.6 × 105 meters above Earth’s surface. The telescope has a mass of 1.1 × 104 kilograms. Earth exerts a gravitational force of 9.1 × 104 Newtons on the telescope. The magnitude of Earth’s gravitational field strength at this location is

Answers

The gravitational field is the Force divided by the mass

Call g the gravitational fiel, F the force exerted by the earth and m the mass of the telescope.

g = F / m


g=9.1x10^4 N / 1.1 x 10^4 kg = 8.27 N/kg

Note that the unit N/kg is equivalent to m/s^2

 

To halt the decline in biodiversity, we must do which of the following?

Answers

adopt ecological conservation practices 

Charles is having a lot of problems with errors in a very complicated spreadsheet that he inherited from a colleague, and he turns to another co-worker, Seymour, for tips on how to trace errors in the sheet. If Charles sees which of the following, Seymour explains, there is a mistyped function name in the sheet.a.#FORM?
b.#NAME?
c.#####
d.#FNCT?

Answers

Answer:

b.#NAME?

Explanation:

Remember, in Spreadsheet programs like Ms Excel several types of errors can occur such as value error.

However, since Seymour explains that there is a mistyped function name in the sheet it is more likely to display on the affected cell as #NAME?.

For example the function =SUM is wrongly spelled =SOM.

Therefore it is important to make sure the function name is spelled correctly.

Not sure if this is a physics question but how do I find the formula using
ohms law..any one

Answers


Physics is as good a place as any, I guess.

And, before we roll up our sleeves, may I also note that assigning 48 fill-ins
(4 each for 12 problems) is exceeded in its excess only by expecting all of
the answers in return for 5 points.    I'll give you the tips and hints you need
in order to solve these, and then I'll wish you well.

I see from the label in the upper corner that all of this refers to series circuits.
That's important to know, and I was about to ask.  So we're going to assume
that for the whole bunch on the page, R1 and R2 are in series, connected
across VS, and there are no other components involved besides the two
resistors.

OK.  Here are the tools you need:

On a resistor . . .
                             ' K ' = 'thousand'
                         ' Meg ' = 'million'

Total resistance . . . RT = R1 + R2 ohms

Voltage across each resistor:
                                                  VR1 = VS  [ R1 / (R1+R2) ]    volts

                                                  VR2 = VS [ R2 / (R1+R2) ]     volts

Total current in the series circuit:   
                                                   IT = VS / RT  = VS / (R1+R2)  Amps

And that's it. Easier than I thought.  There are some other things that
it could have asked for, but it didn't.

Example: 
Line #4:
VS = 5 volts
R1 = 470 ohms
R2 = 1,000 ohms

RT = R1 + R2 = 1,470 ohms

VR1 = VS ( R1/RT ) = 5 (470 / 1,470) = 1.598... volts
VR2 = VS ( R2/RT ) = 5 (1,000 / 1,470) = 3.401 volts

(Notice that  VR1 + VR2 always = VS.)

IT = VS / RT = 5 / 1,470 = 0.0034 Amperes = 3.4 mA (milliamps)

The power supplied by the battery is  (VS)²/RT = 0.017 watt ,
but it doesn't ask for that.

And that's it !  That's everything you need.  Go get 'em, champ !
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