What does a thermostat do when it gets too hot

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

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.