Flashcards and recall.

Try this with Physics

1. Write one prompt per card. Use definitions, explanations or examples from your current topic.
2. Answer aloud before turning the card. Split a card if it asks for several unrelated facts.
3. Set aside missed cards and revisit them in a later session.

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Recall topics

• How does an operational definition improve a physics investigation?
• A ruler reading is repeated ten times. Which error may shrink, and which may remain?
• Why is a best-fit line preferable to joining successive experimental points?
• What belongs on both axes of a physics graph?
• How can residuals expose a poor linear model?
• What is the difference between precision and accuracy?
• How is percentage uncertainty calculated for x ± Δx?
• For independent small uncertainties, what conservative bound is often used for a product xy?
• What does a nonzero graph intercept establish?
• Why record raw data rather than only rounded averages?
• Which two independent conditions describe planar static equilibrium?
• How is a force’s moment about a pivot calculated?
• Why choose a pivot through an unknown hinge reaction?
• Where does the weight of a uniform horizontal beam act?
• A 40 N force acts with perpendicular lever arm 0.300 m. What moment does it produce?
• Can a body in equilibrium have several nonzero forces acting on it?
• What changes at the onset of tipping for a supported body?
• Why does a cable’s full tension not always supply vertical support?
• What is a force couple?
• Why is torque measured in N m rather than joules in equilibrium answers?
• What accelerates in uniform circular motion if speed is constant?
• How are speed, radius and period related for a circular orbit?
• Is centripetal force an additional force on a free-body diagram?
• At fixed radius, how does doubling speed affect radial acceleration?
• At fixed period, how does doubling radius affect radial acceleration?
• What happens immediately after a string breaks during horizontal circular motion?
• A 0.500 kg object moves at 4.00 m/s in a 2.00 m circle. What inward force is required?
• How do angular speed and linear speed relate?
• How can a conical pendulum maintain constant height?
• Why does the radial force do no work in uniform circular motion?
• What speed allows frictionless motion on a banked road?
• What provides the inward force on a frictionless banked road?
• Above a banked road’s no-friction speed, which way is static friction directed?
• Below a banked road’s no-friction speed, which way can static friction act?
• At the top of an inside vertical loop, how is radial force balance written?
• What is the minimum speed at the top of an ideal inside loop for contact?
• At the bottom of an inside vertical loop, how does normal force compare with weight?
• Why is speed generally not constant around a gravity-driven vertical loop?
• What two equations are often needed for a complete vertical-loop problem?
• Does N=0 at the top of a loop mean gravity is zero?