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Physics 3 rd Nine Weeks Benchmark Review

Physics 3 rd Nine Weeks Benchmark Review. Define transverse wave. What factor most affects the λ of a mechanical wave? Sound waves are (longitudinal/transverse). Pitch depends on ____ of the sound wave. Sound waves travel faster through (air/water/solid).

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Physics 3 rd Nine Weeks Benchmark Review

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  1. Physics 3rd Nine WeeksBenchmark Review

  2. Define transverse wave. • What factor most affects the λ of a mechanical wave? • Sound waves are (longitudinal/transverse). • Pitch depends on ____ of the sound wave. • Sound waves travel faster through (air/water/solid). • A train moves toward an observer. To the observer the sound is (higher/lower) in pitch than the sound heard by a person on the train. • Does the pitch change for a person on the train? • A TV uses ____ waves. • A microscope uses ____ waves. • Fluorescent minerals are identified by ____ waves. • What is the speed of light? • If a wave has a frequency of 5.0 x 109 Hz, what is the λ? • If a wave has a λ of 2.0 x 10-4 m, what is the frequency? • Green light and red light travel at (different/same ) speeds. • The relationship between λ and frequency holds for light because _________.

  3. 16.If you are 3X the distance from a light source the brightness will be (9X/ 1/9) as bright as being next to the light. 17.An object creates a real image 40.0 cm from a concave mirror with a focal length of 15.0 cm. How far from the mirror is the object? 18.A concave mirror forms a real image 30.0 cm from a mirror. If the object is 12.0 cm away, what is the focal length? 19.If a virtual image is formed 18.0 cm from a convex mirror with a focal length of -30.0 cm, what is the objects distance? 20.A convex mirror with a focal length of -15.0 cm has an object 25.0 cm in front of the mirror. What is the image distance? 21.An object placed close to a concave mirror will produce an image (real/virtual; inverted/upright; enlarged/ reduced). 22.An object placed close to a convex mirror will produce an image (real/virtual; inverted/upright; enlarged/ reduced). 23.A pencil appears bent if a portion is placed in water. This is due to ______. 24.A fish appears closer to the surface in water than it really is when observed form a riverbank. This is due to __________________. 25.When light passes from one material into another in which its speed is higher, it is bent (toward/away) from the normal.

  4. 26.When light passes from zircon (n= 1.923) into fluorite (n = 1.434) at an angle of 60.0°, its path is bent (toward/away) from the normal. 27.If a light ray passes from air into glass (n = 1.65) at an angle of 40.0°, what is the refracted angle? 28.Carbon tetrachloride (n = 1.46) is held in a glass container (n = 1.52); if the angle of incidence is 35.0°, what is the refracted angle? 29.An object is 25 cm from a converging lens. It forms a real image 23 cm from the lens. What is the magnification? 30.An object is placed 11.0 cm in front of a concave mirror. If the radius is 44.0 cm calculate the image distance, magnification, and draw a diagram.

  5. Differentiate specular and diffuse reflection. • The angle of incidence equals the angle of _______________ for mirrors. • In a vacuum, all electromagnetic radiation travels at _________________. • If polarized sunglasses are placed at right angles to each other, you will see_____________.

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