Answer:
Speed of sound wave v=νλ=2000×0.35=700 m/s
Distance d=1.5 km=1500 m
Time t=vd=7001500≈2 s
Answer:
systematic
Explanation:
Systematic observation: The systematic observation is used either to disprove or support a hypothesis and is a form of calculated observation. An observation should be repeatable and bias-free to be systematic. In systematic observation, a hypothesis is being made by the researcher and then it is being tested through experimental methods.
Advantage:
1. It forms the basis of scientific inquiry.
2. Mode of getting or acquiring wisdom about the environment.
In the question above, the observational technique used by Bebe can best be described as a systematic observation.
Answer:
A) confluence.
Explanation:
Luther is developing a test of intelligence. He believes that in order to accurately generate an intelligence test score, he must assess a multitude of factors that will be added together to form the "product" called intellect.
This belief indicates that Luther is a strong proponent of confluence.
Niku is relying on a ROLE to guide her actions.
Personal choice, voluntary exchange, freedom to compete in markets, and protection of person and property. Institutions and policies are consistent with economic freedom when they allow voluntary exchange and protect individuals and their property.
