No one will ! it's multiple ! ! 1.) a 2.0 x 2.0 -inch slide is placed before a converging lens 21 inch in front of the focal point. if the focal length is 20. inches, how large is the image that is projected on the screen? inches 42 x 10. 40. x 40. 420 x 420 2.)four beats per second are heard when an unknown tuning fork and a 240 hz tuning fork are struck simultaneously. this same unknown tuning fork and a 250 hz tuning fork are struck. six beats are heard. its exact frequency: is 256 hz is 236 hz is 244 hz cannot be determined

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.

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

What is the temperature in degrees celsius of a substance with a tempature of 49k