What is unit of pressure?why is it called a derived unit ? give reasons​

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?

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.

It takes a lot of energy to get the temperature of water to increase and eventually boil because water has a high heat.