A smoke detector is an electronic fire-protection device that automatically senses the presence of smoke as a key indicator of fire and creates a loud sound as a warning. In 3-5 sentences, describe what is happening inside a photoelectric smoke detector as soon as smoke enters it
Answers: 3
Physics, 21.06.2019 19:40, bighomie28
Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?
Answers: 3
Physics, 21.06.2019 23:00, xojade
Athermometer is removed from a room where the temperature is 70° f and is taken outside, where the air temperature is 10° f. after one-half minute the thermometer reads 60° f. what is the reading of the thermometer at t = 1 min? (round your answer to two decimal places.) ° f how long will it take for the thermometer to reach 30° f? (round your answer to two decimal places.)
Answers: 3
Physics, 22.06.2019 05:40, laurelbrasi
The difference between a red shift and a blue shift has to do with wavelength frequency. t or f
Answers: 1
A smoke detector is an electronic fire-protection device that automatically senses the presence of s...