The leg of a spider is 0.2 cm long. When viewed through a microscope, a person with a near point of 25 cm sees an image 2 m long located 10 m away. What is the angular magnification?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s