The twinkling of starlight and the focusing of images by lenses are due to ________ of light

Fill in the blank(s) with correct word


refraction

Physics & Space Science

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The spring force is larger

A. The more the spring is compressed B. The more the length is changed C. The more the spring is stretched D. None of these

Physics & Space Science

Electrons flow in an electrical circuit by

A) being bumped by other electrons. B) colliding with molecules. C) interacting with an established electric field. D) none of the above

Physics & Space Science

Who conceived the idea of using a crystal for observing diffraction of x-rays?

a. Roentgen b. von Laue c. W. L. Bragg d. W. H. Bragg

Physics & Space Science

A football kicker is attempting a field goal from out. The ball is kicked and just clears the lower bar with a time of flight of If the angle of the kick was 45°, what was the initial speed of the ball, assuming no air resistance?

A) 21.5 m/s B) 19.7 m/s C) 2.2 m/s D) 39 m/s

Physics & Space Science