Use the temperature sensor to calculate the ambient temperature. Make the use of DC motor and driver. Code your circuit such that when the temperature increases, LED turns ON and DC motor starts spinning. Here, motor will work as a Fan. The circuit connections will be quite tedious. Components required: DC motor Temperature sensor Motor driver LED Jumper wires For coding part, you just have to combine parts of code which we discussed in our session. Use the code from temperature sensor circuit to convert and calculate the temperature. Set the threshold temperature value (example 75 degrees) and use if loop. Inside the loop will be the code for motor and LED.

The modern-day generator works on the principle of electromagnetic induction discovered by michael faraday in 1831-32. faraday discovered that the above flow of electric charges could be induced by moving an electrical conductor, such as a wire that contains electric charges, in a magnetic field.

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

"induction" is the process of charging an object without touching it.hope my answer has you : )