Question

question 1-52 which is an example of a closed system? a motion - detecting exterior light a microwave a coffee pot clothes dryer

Explanation:

A closed - system is one that exchanges energy but not matter with its surroundings. A microwave exchanges energy (microwave radiation) with the food inside to heat it, but no matter is exchanged between the inside and outside of the microwave during normal operation. A motion - detecting exterior light exchanges energy (electrical energy to light energy) and also interacts with the external environment in terms of detecting motion (matter - air movement etc.). A coffee pot exchanges matter (coffee, water) and energy (heat). A clothes dryer exchanges matter (moisture from clothes to air) and energy (heat).

Answer:

a microwave