Let us have an imaginary classroom with 10 students. We know the percent of marks obtained by these students which are 75, 58, 90, 87, 50, 85,
92,75, 60 and 95. We will draw the bar chart for this data,

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?

Examine the drawing of a molecule. each ring represents an atom of nitrogen (n). what’s the chemical formula of this substance?