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Higher Physics
| Question | Answer |
|---|---|
| Law of conservation of momentum | Total momentum befor=total momentum after IN THE ABSENCE OF EXTERNAL FORCES |
| Acceleration is... | change in velocity per unit time |
| Elastic collision | Momentum and kinetic E are stored |
| Inelastic collision | Momentum is conserved kinetic E is lost |
| Impulse= | area under F/t graph = change in momentum |
| 1cm^3= | 1x10^-6m^3 |
| 1cm^2= | 1x10^-4m^-2 |
| 1 Volt= | 1J/C |
| Lost volts= | Ir = E-V |
| I short circuit= | E/r |
| I stays the same for... | all frequencies for a resistor |
| In an ideal op-amp... | input I 0 (infinite input R) no V between invertiing and non-inverting inputs (both input pins at same V) |
| Op-amps saturate when... | V > 85% of supply V |
| In the photoelectric effect, discharge only occurs if... | Zinc metal plate, UV light, AND -ve charge |
| E1= | work function |
| f0= | threshold f |
| D= | absorbed dose |
| H= | equivalent dose |
| A capacitor can block... | d.c. |
| When the distance between slits in a grating increases... | distance between maxima on screen decreases |
| Intensity= | Js^-1m^-2 |
| n-type and p-typ are... | electrically neutral |
| In fission______ are released. | neutrons |
| In a capacitor circuit, if f increases... | I increases |
| If critical angle is smaller than angle of incidence... | total internal reflection |
| Newton's 3rd law | Equal and opposite force |
| To increase the distance between fringes on a screen... | use light of lower f |
| MOSFET consists of... | Drain, gate, source |
| In amplifiers, the bottom line= | 0V |
| Public's annual effective dose | 2msV |
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