Help please what is the net acceleration of a 9 kg block that is being pulled with a horizontal 67 N force if there
is a frictional force of 6 N acting on the block?
Give your answer in m/s² and round to one decimal place.

If element x has 99 protons how many electrons does it have

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?

The velocity of a car traveling in a straight line increases from 0 meters/second to 30meters/second in 8 seconds. what is the average acceleration of the car?