Question

Q.9 (a) Street lighting is controlled automatically. A light sensor and a microprocessor are used to decide when to switch each street light on or off. Describe how the sensor, microprocessor and light interact to switch the street light on or off, Include in your answer how the microprocessor stops the street lights being frequently switched on and off due to brief changes in the light intensity.​

Answer 1

Answer:

0 is the only number whose negative is 0 itself. Thus, 0 is the only rational number which is equal to its additive inverse

Answer 2

Answer:

The dark reactions occur in the stroma. or, in words: carbon dioixde + water + light energy ---> glucose + oxygen + water OK, onward .... ... The oxygen is released from the plant into the air. ATP & NADPH2 are energy molecules