Bruck's speed increases uniformly from 15km/h to 60km/h in 20sec. Determine
the average Speed: (B) The acceleration
and the distance travelled

all units in meters and seconds

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Explain how plate tectonics have changed earth’s surface over time. include the role of plate tectonics in the creation of landforms.

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.