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mr 67

Public contributions from visitors who posted under the name mr 67.

Questions 25
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Latest questions from mr 67

A family has a lot of photos and homemade videos on VHS tapes stored in a box. Some of the photos are beginning to fade, and the tapes are becoming degraded. What are two advantages of digitizing the photo and video coll...
1 answer
Which TWO describe digital signal waves? waves with a larger range of amplitudes waves represented by a series of numbers waves that require less encoding and decoding waves that securely transmit information over long d...
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Sound energy can travel through a solid, liquid, or gas. Sound cannot travel through space. Which statement best describes a sound wave? It is a mechanical wave because it can travel through a vacuum and through a medium...
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Which THREE energies travel on mechanical waves? cooking food in a microwave oven plucking a guitar string waves in a pond after a pebble hits the pond’s surface cellular phones communicating with other cellular phones s...
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Which statement best classifies P-waves and S-waves? Both waves are mechanical waves. Both waves are electromagnetic waves. S-waves are mechanical waves, while P-waves are electromagnetic waves. P-waves are mechanical wa...
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A scientist is classifying a wave he observed. The wave can travel through Earth's atmosphere and continue into outer space. What type of wave did the scientist most likely observe? The wave is a light wave because it re...
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The student investigates the speed of sound through wood. The density of wood is 0.90 g/cm3. What observation will the student make? Sound travels faster through wood than through water or glass. Sound travels slower thr...
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The table shows the density of four materials. Material Density (g/cm3) Water 1.00 Steel 7.86 Aluminum 2.58 Polyethylene (plastic) 0.92 Through which material will sound travel the fastest? steel water aluminum polyethyl...
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A student investigates the speed of sound and light through four new substances. The data table shows the densities of each substance. Substance Density (g/cm3) A 0.364 B 1.40 C 0.79 D 1.26 Which statement BEST compares...
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cientists use sonar, or sound navigation and ranging, to map features of the ocean floor and locate hazards for navigation. Sonar emits sound waves through the water, and when these waves reflect off objects, the returni...
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A device that measures wave energy is placed in the wave tank. The red float moves up and down with the waves. As it moves, it pumps high-pressure water into the generator at the bottom. This produces electricity. When t...
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Which statement correctly describes how a sound wave travels through air? The wave carries molecules of air away from the source of the sound. The wave carries energy that causes molecules to move back and forth. The wav...
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he equation c = 1500 + 250 x represents the cost, c, of making x televisions for Company A. The equation c = 150 x + 2500 represents the cost of making televisions for Company B. How will the graph for Company B differ f...
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A cube is a 3-dimensional figure with 6 identical square faceThe perimeter of one of its faces can be found by multiplying its edge length by 4, the area of one of its faces can be found by squaring its edge length, and...
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x = 7 x = | 7 y | y = 7 y 2 = 7 x
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The graphs y = 3 5 x + 1 and y = –2 are shown in the coordinate plane below. Which coordinate point satisfies both equations? (–5, –2) (–2, –5) (–2, –2) (0, –2)
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1. 6 ( x − 2 ) = 6 x − 3 2. 2 ( x − 3 ) = 2 x − 6 3. 3 ( x − 2 ) = x − 6 Which of the equations has no solution? only equation 1 only equation 3 only equations 1 and 3 equations 1, 2, and 3
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ELI: Oh no! Josie! (JOSIE begins to panic. Her hands fly to her throat.) Our final wish! There must be more left. I wish for my wife to speak again! (JOSIE is still silent as tears begin to stream down her face. ELI embr...
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Read this sentence from paragraph 5 of "The Problem with Popularity." "The minute I entered the building, all conversation came to a screeching halt." The words 'screeching halt' suggest that many students lowered their...
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6 But when Midas, with the healthy appetite of the peasant-born, would have eaten largely of the savoury food that his cooks prepared, he found that his teeth only touched roast kid to turn it into a slab of gold, that g...
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3 And Bacchus, knowing that here spoke the son of peasants who many times had gone empty to bed after a day of toilful striving on the rocky uplands of Phrygia, looked a little sadly in the eager face of Midas, and answe...
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3 And Bacchus, knowing that here spoke the son of peasants who many times had gone empty to bed after a day of toilful striving on the rocky uplands of Phrygia, looked a little sadly in the eager face of Midas, and answe...
1 answer
An olive tree grew near where he stood, and from it he picked a little twig decked with leaves of softest grey, and lo, it grew heavy as he held it, and glittered like a piece of his crown.… He touched an apple whose che...
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Read this sentence from paragraph 2. "Building a campfire with sticks and logs is a simple example of using a biofuel." How does the sentence contribute MOST to the meaning of the paragraph? It provides a basis to show h...
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Which statement describes the function? increasing at a constant rate increasing at a varying rate decreasing at a constant rate decreasing at a varying rate
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