The human eye is capable of an angular resolution of about one arcminute, and the average distance between eyes is approximately 2 in. if you blinked and saw something move about one arcmin across, how far away from you is it? (hint: you can use the setup in example 19.2 as a guide.)

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.

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