Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Sceicne > Quiz Machines > Flashcards

Quiz Machines Flashcards

1
Q

Device that changes the force or increases the motion from work

A

Machine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which is easier lifting a piano onto a truck that is 1.5 meters tall or using a ramp over a distance of 8 meters

A

using a ramp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the three-column system

A

work input / machine / work output

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

the column system of using a can opener

A

twisting / can opener / cutting into can

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

how is the MA of a pully determined

A

by how many supporting ropes it has

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How is the MA of a wheel and axle determined

A

Radius of the wheel / radius of the axle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How is the MA of the Screw determined

A

distance between threads

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How to find the MA of a wedge

A

length of blade / thickness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How to find the MA of an Incline Plane

A

length of plane / height of a plane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How to find the MA of a Lever

A

input arm / output armp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

percentage of how much work put into a machine is related to how much work is done by the machine

A

Machine Efficiency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Equation for efficiency

A

(work output / work input) x 100

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What does a mechanical advantage of over one mean

A

increase in force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Mechnical advangtage = 1

A

change dircetion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

MA < 1

A

increases speed or distance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How to find MA

A

Distance / Distanceout or Forceou /Forcein

17
Q

1st Class Lever

A

Fulcrum in middle

18
Q

2nd Class Lever

A

Output in the middle or resistance

19
Q

3rd class level

A

Input in the middle or effort

20
Q

How to find level work

A

fin x din = fout x dout

21
Q

ability to do work or cause change

A

energy

22
Q

transferred from food to you

A

chemical energy

23
Q

transferred from the sun

A

electromagnetic radiation

24
Q

what is needed for motion to occur

A

energy

25
Q

occurs when you exert a force on an object

A

work

26
Q

two things you need for work to happen

A

motion and in the same direction

27
Q

calculation of work

A

force times distances

28
Q

what is the unit of work

A

joule

29
Q

rate at which work is done

A

power

30
Q

an object with more power does ——- work in same time

A

more

31
Q

an object with more power does —— in less gime

A

same

32
Q

power calculation

A

work / time or energy / time

33
Q

power unit

A

watts

34
Q

Bonds between atoms creat

A

Chemical Energy

35
Q

total kinetics and potential energy of a fluid

A

thermal enrgy

36
Q

Energy created by breaking apart the protons and neutrons

A

Nuclear energy

37
Q

jumping from a higher surface gives you more —-

A

gravitational energy

Sceicne (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions