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Questions in physics

[Answered] Use the fact that the speed of light in a vacuum is about [tex]3.00 \times 10^8 \text{ m/s}[/tex] to determine how many kilometers a pulse from a laser beam travels in exactly twelve hours.

[Answered] What is the first step in using a balance beam scale? A. Zero the balance B. Record the mass values C. Put the mass on the tray D. Use the counterweights and dial to balance the scale

[Answered] What role does the environment play in defining the appearance of an organism?

[Answered] Which of the following will exert a force on a magnet? A. Another magnet B. A nearby piece of glass C. A nearby piece of plastic D. A nearby electric current

[Answered] Explain the advantages and disadvantages of a dynamo compared with batteries for bicycle lights.

[Answered] Describe the energy conversions that take place in a bicycle lighting system powered by a dynamo.

[Answered] Tina's science teacher shines a laser onto a screen. It is brighter than the white light from the laboratory lights. Use your ideas about frequency to explain the difference between laser light and white light.

[Answered] Scientists in a particular field strive for the same quality of work because they know their peers will be reviewing their scientific claims. What does this review process help ensure? A. Standards of the profession B. Publication in scientific journals C. Resistance to new information D. Access to university databases

[Answered] Describe all the ways that Newton's laws can apply in a car crash.

[Answered] A liquid changes rapidly into a gas at the liquid’s boiling point.