Which of the following sentences is incorrect about pressure? i) Pressure depends upon the amount of force applied.
ii) Pressure depends on the area upon which is the force is applied.
iii) Pressure is a vector quantity.
iv) The force acting per unit area is called pressure ​

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.

The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?