The graph of ax2 + bx + c is shown here and
Identify the signs of a, b and c.
| a | b | c | |
|---|---|---|---|
| A | +ve | +ve | –ve |
| B | +ve | –ve | –ve |
| C | +ve | –ve | +ve |
| D | –ve | +ve | –ve |
The graph of ax2 + bx + c is shown here and
Identify the signs of a, b and c.
| a | b | c | |
|---|---|---|---|
| A | +ve | +ve | –ve |
| B | +ve | –ve | –ve |
| C | +ve | –ve | +ve |
| D | –ve | +ve | –ve |
Fill in the blanks:
The __(i)__ of a sound is determined by its __(ii)__. The __(iii)__ of the sound wave depends upon the force with which an object is made to vibrate. A sound of __(iv)__ frequency is called a __(v)__.
| (i) | (ii) | (iii) | (iv) | (v) | |
|---|---|---|---|---|---|
| A | Amplitude | Loudness | Loudness | Double | Note |
| B | Loudness | Frequency | Amplitude | Single | Tone |
| C | Loudness | Amplitude | Amplitude | Double | Tone |
| D | Amplitude | Loudness | Loudness | Single | Note |