amelia goes for mountering with some selected friend of her batch .Intially she is scared of it .Her trainer John tells her that she should be strong. John provides her on strong rope and teaches how to climb the mountain. A. name the fibre that is used to making climbing rope? B. what can welearn from Amelia? C. write value of John as a trainer?​

Will a heavier bowling ball hit pins better than a lighter bsll

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.

An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?