Why isn’t the radiometric dating of sedimentary rock exact? Because sedimentary rock only contains carbon-14 and no other radioactive isotopes. Because sedimentary rock only forms where there were ancient seas. Because sedimentary rock is constructed of many different layers. Because sedimentary rock is made up of weathered and eroded bits of igneous rock.

Jackson is designing a new heater, and he wants to experiment with different thermally conductive materials. which of these materials would be useful in conducting heat?

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

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?