How much energy is required to change a 44 g ice cube from ice at −10◦C to steam at 112◦C?
The specific heat of ice is 2090 J/kg ·
◦ C, the
specific heat of water is 4186 J/kg ·
◦ C, the
specific heat of stream is 2010 J/kg ·
◦ C, the
heat of fusion is 3.33 × 105
J/kg, and the heat
of vaporization is 2.26 × 106
J/kg.
Answer in units of J

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

An atom that has gained or lost electrons is called an _

Area around a charged object where the objects can exert a force on another charged objects is an electric