B. both high energy and low energy waves
Answer: for an object or gas or liquid to float in another there must be a difference in density
Explanation:
Helium has a density of 0.18 kg/m³ and air has a density of 1.29 kg/m^³. If a balloon is filled with helium it will float in air due to density differences
Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces
The costs, risks, and benefits to building a nuclear waste storage facility somewhere else
Answer:
Lathanum .
Atomic number = 57
Symbol = La
Atomic weight = 138.9
No of energy orbitals = 6
Electronic configuration
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