. Current of 1.5A is Field. what is the strength of the Magnetic field
A 1m Long wire Carrying
Placed
at
an angle of 30° with uniform Magnetic
if wire experience a
force of 3N?

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.

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration