Prompt: SI unit of force
ScienceA little curiosity
Physics concept · RECALLSI unit of forceThink it. Then flip it.
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Physics Essentials
Units, forces, energy and waves
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- 01Motion, forces and energy26 cards · ~4 min
- 02Waves, sound and light20 cards · ~3 min
- 03Electricity and circuits12 cards · ~2 min
- 04Describing physical quantities3 cards · ~1 min
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Prompt: SI unit of energy
ScienceA little curiosity
Physics concept · RECALLSI unit of energyThink it. Then flip it.
Prompt: SI unit of power
ScienceA little curiosity
Physics concept · RECALLSI unit of powerThink it. Then flip it.
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The questions inside.
01SI unit of forceRECALL
02SI unit of energyRECALL
03SI unit of powerRECALL
04SI unit of pressureRECALL
05Force that attracts massesRECALL
06Energy of motionRECALL
07Stored energy due to positionRECALL
08Opposition to a change in motionRECALL
09Equal and opposite forcesRECALL
Newton's third lawAction and reaction act on different objects
Share this card ↗Source: Newton's third law ↗10Rate of change of velocityRECALL
11Energy stored in a stretched springRECALL
Elastic potential energyDepends on stiffness and extension
Share this card ↗Source: Elastic potential energy ↗12This vector quantity equals mass multiplied by velocity in classical mechanics.RECALL
13This vector sum of pushes and pulls equals the rate of change of an object's momentum.RECALL
Net forceA change in momentum is an impulse; the rate of change of momentum is net force.
Share this card ↗Source: Force ↗14This energy transfer equals force multiplied by displacement in the force's direction.RECALL
15This physical quantity is the rate of doing work.RECALL
16This ratio compares useful energy output with total energy input.RECALL
17Stretching an ideal spring stores this type of energy.RECALL
Elastic potential energyIt depends on stiffness and extension
Share this card ↗Source: Elastic potential energy ↗18This broad energy category depends on position or configuration rather than motion.RECALL
19This inward net force keeps an object following a circular path.RECALL
20This contact force opposes sliding, or the tendency to slide, between surfaces.RECALL
21This steady falling speed occurs when drag balances weight.RECALL
22This quantity equals normal force divided by the area over which it acts.RECALL
23This material property equals mass divided by volume.RECALL
24A fluid exerts this upward force on an immersed object.RECALL
25This principle equates buoyant force with the weight of displaced fluid.RECALL
Archimedes' principleThe buoyant force equals the displaced fluid's weight
Share this card ↗Source: Archimedes' principle ↗26This law makes an ideal spring's restoring force proportional to its displacement.RECALL
27SI unit of frequencyRECALL
28Speed of light in a vacuum · estimate in kilometres per secondESTIMATE
299792.458The exact defined speed is 299,792,458 metres per second, or 299,792.458 kilometres per second.
Share this card ↗Source: Speed of light ↗29Wave property measured in hertzRECALL
30Distance between wave peaksRECALL
31Bending of light between mediaRECALL
32Bouncing of light from a surfaceRECALL
33Splitting white light into coloursRECALL
34Sound cannot travel throughRECALL
35Particle of lightRECALL
36This quantity counts complete wave cycles per second.RECALL
37This quantity is the time taken for one complete wave cycle.RECALL
38This wave measurement is the maximum displacement from the equilibrium position.RECALL
39Longitudinal wave · particle vibration direction relative to wave travelRECALL
40Transverse wave · particle vibration direction relative to wave travelRECALL
41This wave family includes light, radio and X-rays and can travel through a vacuum.RECALL
42This colour of visible light has the longest wavelength.RECALL
43This colour of visible light has the shortest wavelength.RECALL
44This thicker-centred lens converges parallel rays of light in air.RECALL
45This thinner-centred lens spreads parallel rays of light in air.RECALL
46This wave behaviour produces spreading around obstacles or through openings.RECALL
DiffractionIt is strongest when the gap is comparable to the wavelength
Share this card ↗Source: Diffraction ↗47SI unit of electric currentRECALL
48SI unit of resistanceRECALL
49Charge of an electronRECALL
50Unit of electrical potentialRECALL
51This quantity measures the rate of electric charge flow.RECALL
52This common term names electrical potential difference.RECALL
53This property measures opposition to electric current, in ohms.RECALL
54This law relates voltage, current and resistance.RECALL
55In a series circuit, this electrical quantity is the same through every component.RECALL
56In a parallel circuit, this electrical quantity is the same across each branch.RECALL
57Charge moves readily through this class of material, which includes copper.RECALL
58This class of material strongly resists charge flow; glass and rubber are common examples.RECALL
59SI unit of temperatureRECALL
60This type of quantity has both magnitude and direction.RECALL
61This type of quantity has magnitude without a direction.RECALL
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