Will give brainliest
when a force of 63n acts on a certain object, the acceleration of the object is 9 m/s^{2}. if the acceleration of the object becomes 4 m/s^{2}, what is the force?

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

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?