What is the difference between a theory and a law of physics?

A theory is a scientifically constructed description of how nature operates in a particular situation. Theories must be tested constantly and amended when necessary. After a theory has been tested many times over a long period of time without failure, it becomes known as a law of physics. It thus commands high (but not absolute) confidence in its predictive powers. More test answers on https://studyhippo.com/astronomy-16-39530/

What is the fundamental law of physics that allowed the planets to form, rather than having all of the material simply fall into the Sun?

conservation of angular momentum More test answers on https://studyhippo.com/solar-system-exam-3-39455/

what law of physics tells you that if a current carrying wire produces a force on a magnet, then a magnet must produce a force on a current carrying wire?

newtons third law, which applies to ALL forces in nature More test answers on https://studyhippo.com/ch-24-magnetism/

Sandra is giving a presentation in her physics class and is worried about what she should do with her hands. Which of the following recommendations would she find in your textbook?

Focus on communicating, and your gestures will usually take care of themselves More test answers on https://studyhippo.com/speech-chapter-13-quiz/

Which one of the following problems would not be part of Physics?

Identifying all the bones in the human body More test answers on https://studyhippo.com/physics-1-11/

Howard studied hard for his math test and found that what he learned helped him on his physics test. Howard benefited from ________

generalization More test answers on https://studyhippo.com/essay-psychology-211-learning-final-review/

Your physics teacher fired a steel ball with a velocity of 3 m/s in the horizontal direction. At the same time she dropped a similar steel ball from the same height. Which on hit the ground first and why? Neglect air resistance.

They both hit the ground at the same time as the force of gravity is the same for both and only acts in the vertical direction. More test answers on https://studyhippo.com/holtz-final-exam-practice-questions/

If the string that holds a whirling can in its circular path breaks, what kind of force causes it to move in a straight-line path – centripetal, centrifugal, or no force? What law of physics supports your answer?

There is no force. The law that supports my answer is Newton’s First Law; ”any object at rest or in motion stays at rest or in motion, unless acted upon by an outside force”. More test answers on https://studyhippo.com/phys-1210-ch-5-8-newtons-3rd-law-and-circular-motion/

Home Page Science Physics Page 2

Physics Flashcards, test questions and answers

Discover flashcards, test exam answers, and assignments to help you learn more about Physics and other subjects. Don’t miss the chance to use them for more effective college education. Use our database of questions and answers on Physics and get quick solutions for your test.

What is Physics?

Physics is the fundamental science of matter, energy, and their interactions. It provides a framework for understanding the physical world around us and allows scientists to explore phenomena on all scales: from subatomic particles to galaxies. Physics plays an important role in our everyday lives, as it helps us understand how cars move, why planes fly, and even how DNA replicates itself. Its principles are also used in engineering applications such as designing better materials or more efficient engines. To truly appreciate physics, one must have a basic understanding of its main topics – force, motion, energy, electricity and magnetism. Force is what causes objects to accelerate or change direction; motion refers to changes in position over time; energy describes how much work can be done with a given amount of effort; electricity involves the flow of charged particles; and magnetism involves the study of magnetic fields created by moving electric charges or currents through a material medium (such as air). All these topics help explain some fundamental laws that govern our universe such as Newton’s Laws of Motion or Maxwell’s Equations for Electromagnetism. In addition to providing insight into natural phenomena like gravity or light propagation physics can also be applied practically in areas like medicine where imaging techniques such as X-ray machines rely on its principles. Today physicists continue to search for answers about the mysteries hidden deep within our universe using increasingly powerful tools such as particle accelerators, telescope, lasers, computers, and satellites. With exciting discoveries being made every day we may soon find out more secrets behind this incredible field.