While driving down a freeway at 20 m/s, your nemesis is driving the opposite direction at an unknown speed. You and your nemesis both honk your horns at each other. You note that your horn has a frequency of 520 hz. You hear your nemesis’s horn frequency at 640 hz. Your horns have the same rest frequency. How fast is your nemesis driving

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.

What is a possible result of higher air temperature caused by global warming

Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not