Which of these is always true about a real image? a. it is reverses b. it is enlargedc. it can be projected onto a screend. it appears behind the mirror

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

The least penetrating form of radiation is

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above