The height of the image is cm.
A6 cm object is 8 cm from a convex lens that has a
focal length of 2.7 cm. The image is 4 cm from the
lens.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present