Does the frequency of a simple pendulum depend on its mass, the acceleration due to gravity, or its length? |
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Two of these. |
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Energy transfer by convection is primarily restricted to... |
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Fluids. |
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A plasma differs from a gas in that... |
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It is electrically conducting. |
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A node is a position of... |
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Minimum amplitude. |
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Atmospheric pressure is caused by the... |
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weight of the atmosphere. |
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When you touch a cold piece of ice with your finger, energy flows... |
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From your finger to the ice. |
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The volume of matter comes mostly from its... |
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Electrons. |
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Caruso is said to have made a crystal chandelier shatter with his voice. This is a demonstration of... |
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Resonence. |
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Pour a liter of water at 40 degrees C into a liter of water at 20 degrees C and the final temperature of the water becomes... |
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At or about 30 degrees C. |
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As a helium-filled balloon rises in the air, it becomes... |
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Bigger. |
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A wave oscillates up and down two complete cycles each second. If the wave travels at an average distance of 6 meters in one second, its wavelength is... |
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3 m. |
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The pressure in a liquid depends on liquid... |
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Depth and density. |
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Doubling the linear size of an object multiplies its area by... |
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4 and its volume by 8. |
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Which has the greater density, a lake full of water or a cup full of lake water? |
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Both have the same density. |
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Airplane flight best illustrates... |
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Bernoulli's Principle. |
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When a pendulum clock at sea level is taken to the top of a high mountain, it will... |
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Lose time. |
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Your feet feel warmer on a rug than on your tile floor because your rug... |
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Is a better insulator than your tile. |
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The moderate temperature of islands throughout the world has much to do with the water's... |
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High specific heat. |
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An observer on the ground hears a sonic boom which is created by an airplane flying at a speed... |
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Greater than the speed of sound. |
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The approximate range of human hearing is... |
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20 hertz to 20,000 hertz. |
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Sound travels faster in... |
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Steel. |
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A wooden block has a mass of 1000 kg and a volume of 2 cubic meters. What is the block's density? |
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500 kg per cubic meter. |
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A standing wave occurs when... |
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A wave reflects upon itself. |
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A liter of hot water will cool to room temperature faster in a... |
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Black pot. |
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Substances absorb heat energy by the process(es) of... |
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Conduction, radiation, and convection. |
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Most of the matter in the universe is in the... |
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Plasma state. |
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Two equal sized buckets are filled to the top with water. One of the buckets has a piece of wood floating in it, making its total weight... |
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Equal too the weight of the other bucket. |
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Which of these atoms has the greatest number of electrons: uranium, carbon, gold, helium, or iron? |
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Uranium. |
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the phenomenon of beats results from sound... |
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Interference. |
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One of the main reasons one can walk barefoot on red-hot coals without burning their feet has to do with... |
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Low thermal conductivity of the coals. |
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A rock suspended by a string weighs 5 N out of water and 3 N when submerged. What is the buoyant force on the rock? |
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2 N. |
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What makes an element distinct? |
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The number of protons. |
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Atoms heavier than hydrogen were made by... |
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Nuclear fusion. |
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On a windy day, atmospheric pressure... |
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Decreases. |
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Like a transverse wave, a longitudal wave has... |
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Amplitude, frequency, wavelength, and speed. |
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The fact that a thermometer "takes its own temperature" illustrates... |
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Thermal equilibrium. |
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A temperature difference if 10 degrees C is also equal to a temperature difference of 10 on the... |
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Kelvin scale. |
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The vibrations of a transverse wave move in a direction... |
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At right angles to the direction of wave travel. |
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A spring is stretched by 10 cm by a suspended 1-kg block. If two such springs side by side are used to suspend the block, ,so each spring supports half the weight of the block, then each spring will stretch... |
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5 cm. |
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If the volume of an object were to double while its mass stays the same, its density would... |
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halve. |
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