force, gravity, and pressure ppt

Question 1

what are the SI unit of measurement

Answer 1

m
kg
s
A
mol
cd.

Question 2

what are the Englinsh comparison to the SI units?

Answer 2

lb
oz
inch
foot
yard
F

Question 3

what are the metric system measurements

Answer 3

mL
kg
cm3

Question 4

In physics what unit of measure is most freq used

Answer 4

SI

Question 5

whats the quanity and unit

m

Answer 5

length

meter

Question 6

whats the quanity and unit

kg

Answer 6

mass

kilogram

Question 7

whats the quanity and unit

s

Answer 7

time

second

Question 8

whats the quanity and unit

A

Answer 8

electric current

ampere

Question 9

whats the quanity and unit

K

Answer 9

temp

kelvin

Question 10

whats the quanity and unit

mol

Answer 10

quanity of a substance

mole

Question 11

whats the quanity and unit

cd

Answer 11

luminosity

candle

Question 12

what is quanity described by a single unit

Answer 12

scalar

Question 13

what are the characteristics of scalar

Answer 13

size/magnitude
mass
temp
length

Question 14

what deals with magnitude and direction

Answer 14

vector

Question 15

what are the characteristics of a vector

Answer 15

displacement
velocity
acceleration
force

Question 16

force is a ______

Answer 16

vector

Question 17

what is a sum of all vectors on a given object?

Answer 17

force (net force)

Question 18

does zero net force constitute zero forces acting upon an object

Answer 18

no

Question 19

what law and who made it?

an object will remain at rest or in motion indefinitely unless a net force act upon it? (inertia)

Answer 19

Newton’s
law of motion #1
(inertia)

Question 20

what law and who made it?

force is proportional to a specific mass and an acceleration in a specific direction

Answer 20

Newtons
law of motion #2
(force)

Question 21

what law and who made it?
for each force exerted on one body, there is an equal, but oppositely directed force on some other body interacting with it

Answer 21

Newtons law

Law of motion #3

Question 22

how to remember the laws (just for me you may not like)

Answer 22

1st- you’ll remain in motion unless something acts upon you
2nd- the force you are moving is proportional to your mass and acceleration
3rd- while going there is a constant force against you interacting with it

Question 23

explain force when a man is pushing a car!

Answer 23

• man applies 1 force to car
• man applies one force to ground (friction coeff)
• Car applies force to ground (friction Coeff)
• car applies force to man
• gravity applies force to car and man
• molecules in the air applying resistance

Question 24

what is the standard unit of measurement of force

Answer 24

newton

Question 25

equation for force?

Answer 25

force= mass x acceleration

Question 26

Equaion for newton

Answer 26

newton = kg x m / s^2

Question 27

what is a newton in layman's terms

Answer 27

the amount of force required to move one kg of an object one meter per second squared

Question 28

mr. miller is 116kg is that his weight?

Answer 28

no it's his mass

Question 29

what is the difference b/t pounds and kg

Answer 29

pounds are weight | kg is mass

Question 30

weight is a measure of what?

Answer 30

mass in accordence with its gravitational relationship

Question 31

any 2 particles with mass have what between them?

Answer 31

attractional force

Question 32

how do you find gravitational force?

Answer 32

Fg= G [(M1 x M2) / D2] G=gravitational constant M1 and M2= mass of 2 objects D2= distance form central points of each object (squared)

Question 33

what is the gravitational constant?

Answer 33

6.67 x 10^-11 N m^2 / kg^2

Question 34

what does little g mean

Answer 34

gravitational constant for earth

Question 35

what does g=

Answer 35

9.81 ms^2 (m/s/s) or 32 ft s^2 (ft/s/s)

Question 36

how do you calculate gravitational force (fw)

Answer 36

= g x m | fw = 9.81 ms^2 (m/s/s) or 32 ft s^2 (ft/s/s) x m

Question 37

everything close to the earths surface will fall or accelerate at what rate

Answer 37

9.81 m/s^2

Question 38

every kg of an object has a gravitational force of what

Answer 38

9.81 m/s^2

Question 39

what is the free fall vacume? what are its properties

Answer 39

- weight is the only force acting on the object - mass of the object does not effect the motion - shape of the object does not effect the motion - ----All objects fall at the same rate in a vacuum (galileo)

Question 40

what is free fall in the atmosphere? what are the properties?

Answer 40

-weight is the only force acting on the object - comparing 2 objects, the higher velocity occurs for hreater weight, lower drag coeff (more streamlined), lower gas density (higher altitude), or smaller area ---- objects do not fall at the same rate through the atmosphere---- velocity gas density frontal area drag coeff

Question 41

what are fractions of a newton

Answer 41

dynes

Question 42

forces are measured in newtons, biut when very small forces are being measured what is used?

Answer 42

dynes

Question 43

dynes are measured as (what is there equation)

Answer 43

dynes= gm x cm / s^2

Question 44

in healthcare what is measured as a dynes?

Answer 44

swans pvr and svr

Question 45

what is magnitude only?

Answer 45

scalar

Question 46

what is magnitude and direction

Answer 46

vector

Question 47

force and vector is measured in what?

Answer 47

newtons

Question 48

gravitational force allows for what?

Answer 48

weight measurements

Question 49

What is a measure of a given force dispersed over a specific area

Answer 49

pressure

Question 50

pressure is measured in what?

Answer 50

pascals

Question 51

pressure is inversly proportional to what?

Answer 51

area

Question 52

pressure is directly proportional to what?

Answer 52

force

Question 53

1 pascal is equal to what?

Answer 53

1 n/m^2 | 1 newton per meter squared

Question 54

when pascals is discussed with pressure | 1 N/m^2 will equal what

Answer 54

102 gms/m^2

Question 55

102 gms per square meter (gms/m^2) is a fairly small value so often times kilopascalse are used in the place of pascals!! so 1 N/m^2= 1 pascals so _______ N/m^2 = 1 kilopascal

Answer 55

1000 N/m^2

Question 56

``` 100 KPa (kilopascals) equals? Atm BAR mmHg Torr cmH2O lb/in^2 ```

Answer 56

``` Atm- 1 BAR- 1 mmHg- 760 Torr- 760 cmH2O-1020 lb/in^2- 14.7 (just remember 1 atm= 760mmHg= 760 torr= 14.7 lbs/in^2) then memorize the other 2 ```

Question 57

what is a measure of the gravitational pull of the molecules and particles towards the center of the earth?

Answer 57

atm pressure

Question 58

what is teh standard measurement of atm pressure at sealevel?

Answer 58

1 atm

Question 59

Higher the elevation the _______ the atm pressure? and why?

Answer 59

lower - fewer molecules at higher elevation - further distance b/t 2 objects

Question 60

the lower the elevation the _________ the atm pressure?

Answer 60

higher | like submerging into the water

Question 61

the presure in a fluid is transferable in an _________ system

Answer 61

enclosed

Question 62

an open fluid system has an _________

Answer 62

equilibrium

Question 63

an open fluid system had an equilibrium so when pressure is applied to this equilibrium the change in height of the fluid can be used to calculate the what?

Answer 63

pressure change ( bp)

Question 64

what is gauge pressure??

Answer 64

the pressure reading of a container of some kind, above and beyond atm pressure

Question 65

what is absolute pressure

Answer 65

the combination of atm pressure an dany pressure above atm pressure

Question 66

what in our practice uses gauge and absolute pressures?

Answer 66

``` APL valve downstage regulator pressure regulators O2 fail safe O2 flush valve ```

Question 67

equation for pressure?

Answer 67

pressure= force / area

Question 68

when force is constant and area increases what happens to pressure?

Answer 68

decreases

Question 69

how is the last 2 slides applied to anesthesia?

Answer 69

the smaller syringe you use the higher pressure u get!!! | and the bigger syringe the less pressure u get!!