Photoelectric effect
Why can the same light beam eject electrons from one metal but none from another? Which properties of the light determine the photoelectrons' energy?
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PHYSICS · 8 EXPLORATION STEPS
Centripetal force, radius, angular speed and mass
A hand-turned apparatus only gives division counts on two scales. Can these reveal the quantitative relationships between F and m, r, ω?
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▶ Open 3D simulationYOUR EXPLORATION
One step, one new insight.
- 01
Explore the apparatus
- 02
Check the apparatus
- 03
Relationship with mass
- 04
Relationship with radius
- 05
Relationship with angular speed
- 06
Combine into one formula
- 07
Errors and incorrect procedures
- 08
Assessment: ω has exponent two
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Charging and discharging a capacitor
What does a capacitor actually store? Can a single quantity describe its ability to store charge?
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The relationship between acceleration, force and mass
Without measuring force or acceleration directly, can a paper tape and a few masses reveal the relationship between a, F and m?
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