Which of the following would most likely utilize a particulate control device?
a. a vacuum cleaner
b. a factory smokestack
c. a laundry dryer
d. all of the above
Please select the best answer from the choices provided

d

Explanation:

Correct D). All of the above The particulate control device is a device that is used for the separation of the material that is of a bigger size as compared to filter. In the factory smokestack, the particulate control device filters the particulate matter that is known to cause air pollution. In the vacuum cleaner, a fine dust particle is filtered out. In the laundry dryer, the water and dirt molecule is allowed to pass through it. Hence, all the options are correct.so therefore your answer would be all

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

490 n

f=125n a=2.5m/s2