Question

assume the Pi = 101 kpa an vi= 10.0l if pf=43.0 kpa what is v

Answer 1

Pi*Vi = Pf * Vf

101*10.0 = 43.0 * x

solve for x

Answer 2

how do you find out what x is ? im just learning this

Answer 3

you divide both sides by 43.0 to isolate x

Answer 4

so i just do 43.0 divided by 43.0 ?

Answer 5

yes on the right side

do the same on the left side

Answer 6

um well what sides? sorry... im really confuessed because its only on a piece of paper my teacher wrote it. its only the problum

Answer 7

101*10.0 = 43.0 * x

101*10.0/43.0 = 43.0 * x/43.0

101*10.0/43.0 = 1x

x = 101*10.0/43.0

x = ???

Answer 8

23.488372093?

Answer 9

you got it

Answer 10

thank you!

Answer 11

you're welcome

Answer 12

do u know how to do (9x10 power of -1) x 3 x 10 power of 10 )?

Answer 13

multiply the bases (9 and 3)

add the exponents (-1 and 10)

then convert to scientific notation (if necessary) or standard form

Answer 14

its standard form how do u write that 9x3=27 an -1 +10 =9

Answer 15

so it would be 27 x 10^9

you can convert to scientific notation or standard form if you want

Answer 16

the answer in scientific notation would be 2.7 x 10^10

in standard notation, it would be 27,000,000,000 (which is the number 27 billion)

Answer 17

thank you i have a few more questions if u dont mind

Answer 18

if electirc forces are so strong why dont i notice them acting on everything around me ? a friend asks how do i respond ? thats the question

Answer 19

well there's a balance in forces that keeps everything from either flying apart or pulling together and collapsing in on itself

Answer 20

you only see an imbalance in force when you see things like electricity or magnetism

Answer 21

okay thank you show how multiply both sides of the acceleration equation a= fnet (over) m by m results in the net force equation fnet+ma

Answer 22

I'm using f instead of fnet

a = f/m

a*m = f/m * m ... Multiply both sides by m.

a*m = fm/m

a*m = f*1

a*m = f

f = a*m

f = ma

Answer 23

i dont get it ......

Answer 24

where are you stuck?

Answer 25

all of it i dont know what m is ? or like any of it?

Answer 26

there's no need to know m

Answer 27

you just need to rewrite a = f/m into f = ma

Answer 28

ohh okay i get it . hiw do u do calculate the acceleration of a 25 kg object that is moved with a force of 300 n sorry i have to have this an an whole other book done in an hour

Answer 29

f = ma

300 = 25*a

solve for 'a'

Answer 30

12?

Answer 31

good, the acceleration is 12 m/s^2

Answer 32

okay thanks the mass of the following box is 120.00g calculate the destiny the box has a 5cm 6 cm an a 4 cm by it ?

Answer 33

first find the volume of the box

Answer 34

120 ?

Answer 35

now divide the mass by the volume

Answer 36

D = M/V

D = 120/120

D = 1

Answer 37

so the density is 1 gram per cubic cm

Answer 38

so is that the answer ?

Answer 39

theres another question the normal states of matter are solid liquid gas a friend says then there is a really uncommon state called plasma how would you respond to this claim

Answer 40

I would respond by showing him/her this link

http://en.wikipedia.org/wiki/Plasma_%28physics%29

Answer 41

this link shows there are tons of places where you would find plasma

so it's not so rare

Answer 42

okay hah thanks evaluate this statment the object is in motion in a stright line and it is moving with a constant speed that must mean that no force is acting on it

Answer 43

ok just say whether it's true or false?

Answer 44

is it false ?

Answer 45

why is it false?

Answer 46

because wouldnt sommething have to be moving it ?

Answer 47

think of it out in outerspace away from any planet

Answer 48

it's far from any forces and it moves in a straight line at the same speed

Answer 49

well then its true

Answer 50

nothing is speeding it up or slowing it down

nothing is changing its direction

Answer 51

so there are no forces acting on it

Answer 52

yes it's true

Answer 53

okay well how do u do this it says place a nymber of the law of motion w=in the blank next to rhe examples of the law giving the first on is fnet =ma

Answer 54

2 seven ball is struck by the cue ball
3 an air filled balloon is released
4 you push on a box of books

Answer 55

not sure what this is saying

Answer 56

something seems missing

Answer 57

ill type it again hold on

Answer 58

place the number of the law of motion in the blank next to the examples of the law giving the examples are

Answer 59

*fnet =ma
* seven ball is struck by the cue ball
* an air filled balloon is released
*you push on a box of books

Answer 60

oh i gotcha, ok one sec

Answer 61

fnet =ma is definitely the second law of motion

Answer 62

even ball is struck by the cue ball sounds like the third law of motion

Answer 63

not sure about the third one

but you push on a box of books also sounds like the third law of motion

Answer 64

thank you! how many cubic centemeters dose 1.304L have

Answer 65

check this link out

http://www.google.com/search?hl=&q=1.304+L+to+cubic+cm&sourceid=navclient-ff&rlz=1B3GGLL_enUS420US420&ie=UTF-8

Answer 66

the question is the distance from the launch site to the observation is 120 meters calculate the adverage height a if the obtained altimeter reading from 4 observations sites were the following

Answer 67

something seems missing here

Answer 68

oh and the pic is mirrored lol

can you fix that please?

Answer 69

yes

Answer 70

can u see the shpae ill typer the answers

Answer 71

yeah i'll just try to reverse it in my head

Answer 72

* 36.5
*35.0
*40.0
*38.0

Answer 73

question is

Answer 74

the distance from the launch site to the observer is 120 meters calculate the average height a , if the obtained altimeter readings from 4 observation sites were the following

Answer 75

do u got it?

Answer 76

one sec

Answer 77

okay

Answer 78

does it give you answer choices?

Answer 79

yes its 36.5 , 35.0 40.0 or 38.0

Answer 80

those are the heights though right?

Answer 81

well it says derees after the numbes

Answer 82

oh nvm, ok one sec

Answer 83

ok

Answer 84

(120*tan(36.5) + 120*tan(35) + 120*tan(40) + 120*tan(38) )/4 = 91.8166161276659

which is roughly 91.82 meters

Answer 85

so which one is it ?

Answer 86

91.82 if you're rounding to two decimal places

Answer 87

ohhh gotcha

Answer 88

what bout this

Answer 89

if a current flowing through a light buld is 0.75 a an the voltage diffrence is across the light bulb is 120v how much resistance does the light bulb have

Answer 90

V = I*R

120 = 0.75*x

solve for x

Answer 91

61 ?

Answer 92

make a general statement about the facts that increases resistance

Answer 93

120 = 0.75*x

x = 120/0.75

x = ???

Answer 94

isnt it 61 ?

Answer 95

no

Answer 96

then idk

Answer 97

120/0.75 = 160