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Engineering: explore STEM content (page 24 of 27) · openstem

All fields Software Mathematics Physics Chemistry Biology Engineering Astronomy Environmental Other Engineering Engineering groups

Explore STEM Content

Search the community's STEM library — free to study, yours to make your own.

Engineering

Circuits, mechanics, materials and design on openstem — flashcards, notes, quizzes, sketches and flowcharts shared by the community. Study free, or clone anything into your library.

Content Groups1

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Flowchart7 objects

Engineering

Engineering · L1 · Magnets Quiz · flowchart

@openstem

Engineering · L1 · Magnets Quiz · flowchart

Note~192 words · 1 min

Why a metal boat floats Drop a lump of metal in water and it sinks. So why does an enormous metal ship float? Loading evenly Cargo has to be spread across both sides. Pile too much on one side and the boat leans, and a leaning boat can tip

Engineering

Engineering · L1 · Boats & Floating Cargo

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Engineering · L1 · Boats & Floating Cargo

Collection5 items

01Engineering · L2 · Learning From Failures

02Engineering · L2 · Learning From Failures

03Engineering · L2 · Learning From Failures

+2 more

Engineering

Engineering · L2 · Learning From Failures

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Engineering · L2 · Learning From Failures

Note~250 words · 1 min

Warm air floats Watch a hot air balloon. A burner roars underneath, filling it with heated air, and the whole thing lifts off the ground. Nothing pushed it up. Why it rises Heated air spreads out and becomes less crowded than the cool air a

Engineering

Engineering · L1 · Hot Air Rises

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Engineering · L1 · Hot Air Rises

Flashcards7 cards

What is cutting or machining?1 / 7

Cutting (machining) shapes a solid piece of material by removing bits of it — for example carving wood with a chisel or cutting sheet metal with shears.

Engineering

Engineering · L2 · Cutting, Machining, and Mass Production

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Engineering · L2 · Cutting, Machining, and Mass Production

Flowchart5 objects

Engineering

Engineering · L1 · Pipes & Water Flow Quiz · flowchart

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Engineering · L1 · Pipes & Water Flow Quiz · flowchart

Flashcards6 cards

An aluminum rod is 2 m long at 15 °C. Aluminum's α ≈ 2.4 × 10⁻⁵ /°C. Find ΔL if it warms to 45 °C.1 / 6

ΔT = 30 °C. ΔL = 2.4 × 10⁻⁵ × 2 × 30 = 0.00144 m ≈ 1.44 mm.

Engineering

Engineering · L3 · Thermal Expansion

@openstem

Engineering · L3 · Thermal Expansion

Flashcards8 cards

A simple triangular truss has a pin support at A, a roller support at B directly 8 m to the right, and an apex joint C sitting above the midpoint, 3 m up. A 600 N load pushes straight down at C. What are the vertical reactions at A and B?1 / 8

300 N up at each support. The truss and the load are both symmetric about the midpoint, so the total 600 N load splits evenly between the two supports.

Engineering

Engineering · L3 · Method of Joints — Worked Example

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Engineering · L3 · Method of Joints — Worked Example

Note~269 words · 1 min

Liquids that refuse to mix Pour honey, dish soap, water and vegetable oil into one tall glass and they don't blend into a murky mess. They settle into four clean layers. Density decides the order: how much mass is packed into a given volume

Engineering

Engineering · L2 · Density Layers in Liquids

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Engineering · L2 · Density Layers in Liquids

Collection4 items

01Engineering · L4 · Mechanical Vibrations

02Engineering · L4 · Mechanical vibrations: natural frequency, damping, and resonance

03Engineering · L4 · Single-DOF vibration response by damping ratio

+1 more

Engineering

Engineering · L4 · Mechanical Vibrations

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Engineering · L4 · Mechanical Vibrations

Quiz6 questions

In injection molding, what happens to the plastic before it enters the mold?

AIt is frozen solidBIt is melted into a liquidCIt is dissolved in waterDIt is left as solid pellets

Engineering

Engineering · L2 · How Things Are Made Quiz

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Engineering · L2 · How Things Are Made Quiz

Flowchart11 objects

Engineering

Engineering · L3 · Center of Mass & Stability · flowchart

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Engineering · L3 · Center of Mass & Stability · flowchart

Flowchart9 objects

Engineering

Engineering · L2 · Multi-Stage Water Filter

@openstem

Engineering · L2 · Multi-Stage Water Filter

Flowchart16 objects

Engineering

Engineering · L4 · Fluid mechanics: pipe flow, boundary layers, and dimensional analysis · flowchart

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Engineering · L4 · Fluid mechanics: pipe flow, boundary layers, and dimensional analysis · flowchart

Flashcards9 cards

What is a task, in project scheduling?1 / 9

A single piece of work with a clear start and end — small enough to estimate a duration for, and to say plainly when it is done. A project is broken down into a list of tasks before it is scheduled.

Engineering

Engineering · L3 · Project Scheduling

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Engineering · L3 · Project Scheduling

Collection4 items

01Engineering · L4 · Manufacturing Processes & GD&T

02Engineering · L4 · Manufacturing processes and GD&T: from raw stock to a functioning part

03Engineering · L4 · Manufacturing process selection

+1 more

Engineering

Engineering · L4 · Manufacturing Processes & GD&T

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Engineering · L4 · Manufacturing Processes & GD&T

Flowchart13 objects

Engineering

Engineering · L1 · Choosing a Material for a Pot Handle

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Engineering · L1 · Choosing a Material for a Pot Handle

Flashcards8 cards

How does an electric motor use an electromagnet?1 / 8

A motor uses a coil that becomes an electromagnet when current flows. Its magnetic field pushes and pulls against another magnet, and that push-and-pull spins a shaft — turning electrical energy into motion.

Engineering

Engineering · L2 · Electromagnets

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Engineering · L2 · Electromagnets

Quiz4 questions

Which four parts do you need to build a simple bulb circuit?

ABattery, wire, bulb, switchBBattery, glue, paper, tapeCWire, magnet, wood, nailDBulb, water, wire, plastic

Engineering

Engineering · L1 · Building Simple Circuits Quiz

@openstem

Engineering · L1 · Building Simple Circuits Quiz

Note~240 words · 1 min

Amplification: bigger, same shape What the chip does on its own That raw gain is unusable. Wire a feedback path from the output back to V− and it becomes precise. That's negative feedback. The two golden rules The non-inverting amplifier Th

Engineering

Engineering · L3 · Op-Amps & Basic Amplification

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Engineering · L3 · Op-Amps & Basic Amplification

Flowchart7 objects

Engineering

Engineering · L1 · Prototypes: Try Small Before You Try Big · flowchart

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Engineering · L1 · Prototypes: Try Small Before You Try Big · flowchart

Flowchart14 objects

Engineering

Engineering · L2 · Choosing a Prototyping Method

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Engineering · L2 · Choosing a Prototyping Method

Flashcards9 cards

Why do engineers carefully study things that broke, instead of just replacing them and moving on?1 / 9

So they can find out exactly why it failed and change future designs or rules, preventing the same failure from happening again — possibly in many other structures, not just the one that broke.

Engineering

Engineering · L2 · Learning From Failures

@openstem

Engineering · L2 · Learning From Failures

Flowchart7 objects

Engineering

Engineering · L2 · Pulleys & Mechanical Advantage Quiz · flowchart

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Engineering · L2 · Pulleys & Mechanical Advantage Quiz · flowchart

Collection5 items

01Engineering · L2 · Evaporative Cooling Basics

02Engineering · L2 · Engineering Evaporative Cooling

03Engineering · L2 · Evaporative Cooling

+2 more

Engineering

Engineering · L2 · Evaporative Cooling

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Engineering · L2 · Evaporative Cooling

Flowchart13 objects

Engineering

Engineering · L3 · Quality Control & Testing · flowchart

@openstem

Engineering · L3 · Quality Control & Testing · flowchart

Flashcards7 cards

What is hardness, in engineering terms?1 / 7

Hardness is how well a material resists being scratched, dented, or worn away at its surface.

Engineering

Engineering · L2 · Hardness and Choosing Materials

@openstem

Engineering · L2 · Hardness and Choosing Materials

Flashcards10 cards

What is destructive testing?1 / 10

Testing that damages or destroys the part being tested in order to find its true limits — for example, pulling a metal sample until it snaps.

Engineering

Engineering · L3 · Quality Control & Testing

@openstem

Engineering · L3 · Quality Control & Testing

Flashcards5 cards

What is a gear?1 / 5

A gear is a wheel with teeth around the edge. When two gears mesh, turning one makes the other turn too.

Engineering

Engineering · L2 · Gears, Pulleys, and Circuits

@openstem

Engineering · L2 · Gears, Pulleys, and Circuits

Note~248 words · 1 min

Water turning into a gas Heat a pot of water and at first it just gets warmer. Keep going and bubbles rush to the surface: it's boiling, turning into steam, which is water as a GAS instead of a liquid. Why a kettle whistles A kettle spout h

Engineering

Engineering · L1 · Water Turning to Steam

@openstem

Engineering · L1 · Water Turning to Steam

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