What causes some children to be pleasant and kind and other to be mean and selfish? Use some theories of development and describe how each theory would help explain how two children who were born at the same time and were similar at birth might turn out different.

How many seconds does it take a pebble released from rest off a bridge to fall 29.4 m ? what is the pebble's speed when it has fallen 29.4 m ?

The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)

What are the similarities & differences between a thermistor and a light dependent resistor in physics?