C. It is answered by observation and evidence.
Good scientific explanations are defined, measurable and controllable. They can be answered by an experiment.
Answer:
hypothesis , hope it helps
Explanation:
Answer:
The truck's speed is 4.04 m/s.
Explanation:
Given that,
Emit frequency = 600 Hz
Beat = 7.00 beat/sec
We need to calculate the truck's speed
Using formula of speed
Where, v = speed of sound
Put the value into the formula
Hence, The truck's speed is 4.04 m/s.
It is based on atomic number, which is the number of protons in the nuclei of the atoms of an element.
Answer:
The source of cosmic background radiation filled the entire universe.
Explanation:
D:The source of cosmic background radiation filled the entire universe.
