Master Physics with Fun Quizzes & Brain Teasers!

What mass of copper metal would absorb 250. 0KJ when it melted at its melting point
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A gas has a temperature of 14 C, and a volume of 4. 5 L. If the temperature is raised to 29 C and the pressure is not changed, what is the new volume of the gas? A. 4. 7 L B. 4. 9 L C. 5. 3 L D. 5. 5 L
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Two bumper cars collide into each other and each car jolts backwards this is an example of which of newtons laws?
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Throughly explain how all organisms are connected and need each other
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The frequency of violet light is 7. 5 x 1014 hertz. What is its wavelength in a vacuum?
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Find the temperature of an ideal gas being quasi-statically compressed by 700 j of work to one-third of its initial volume
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A uniform plank AB of mass 20kg is supported horizontally at 20cm and 70cm marks from A the plank is in equilibrium when massese 50kg and 70kg are suspended at A and B respectively and the weight of 100N is suspended at the 40cm Mark from B
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3.5g of liquid in 4mins with a pressure gradient of 10cm is how many m/s
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An astronaut on the surface of a large spherical asteroid fires a 5. 0 kg cannonball horizontally from a cannon. The asteroid has a diameter of 210 km , and has an acceleration due to gravity at its surface equal to one twelfth of the value on Earth
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What's the mass and weight of each of object if there were placed on mass gmars=3. 8n/kg
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Katie and her dad gather ingredients to make pancakes. Then they follow the following six steps. Mix the ingredients together in a bowl. Add a spoon of pancake mix to a hot pan. See that bubbles start to form and the pancake starts to harden. Wait until the bubbles stop forming. Flip the pancake so the other side can darken and harden. Serve the pancake on a plate. Which three steps in the process best show that new substances are created when making pancakes?A. Steps 1, 2, and 5B. Steps 3, 4, and 5C. Steps 1, 4, and 6D. Steps 2, 3, and 6
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A truck with the mass of 8 ton travels at a velocity of 60km/h and collides with a truck with mass of 5 ton travelling in the same direction at 40kh/h. After the collision the two trucks move together. Calculate the final common velocity if the TWO trucks in m/s after the collision?
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A flywheel of mass 3. 0g consist of a flat uniform disc of radius 0. 40m. It pivots about central axis perpendicular to its plane. A)calculete its moment of inertia,using information from this unit. B)a torque of 6. 8 n m act on it. How will it respond?
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String and nylon thread will stretch when pulled with a moderate force, but only a small amount. if you apply the same force to a spring and it stretches much further than the string and thread, how do the spring constants of the string and thread compare to the spring?
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Which two statements describe what happens to the nuclei of atoms during a fusion reaction
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In a laboratory, nakisha mixes a sodium hydroxide solution with an indicator called phenolphthalein. when combined, they create a pink solution. nakisha wonders if mixing other solutions with phenolphthalein will also create this pink color. how could nakisha use the scientific inquiry process to determine whether mixing other solutions with phenolphthalein will also create a pink color? check all that apply.
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A body moves in circle with increasing angular velocity at time t = 6sec the angular velocity is 27 rad/s what is the radius of circle made by the body where linear velocity is 81 cm/s?
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Before taking a personality test, Jackie sets her mind on growth. How might this affect her understanding of the test? Choose two anSwers- 1.She will score high in the areas she chooses to. 2.She will respond based on what's best in her desired career path.3. She will think of the results as an opportunity to find joy. 4. She will identify areas for self- development in her results.
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Describe the ways the reading addresses how some people use ""uncertainty"" as a way to undermine science:
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Why is sunlight considered a renewable resource? Which are disadvantages of renewable resources? Check all that apply. Renewable energy supplies may not be completely reliable. Renewable energy sources will never run out. Renewable energy produces large quantities of waste products. It is difficult to generate electricity in large quantities using renewable resources. Many renewable energy facilities have higher operating costs
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Which observation supports a model of the nature of light in which light acts as a wave
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Why is the sun so much bigger & brighter than the other stars in the sky?
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A car of mass , initially at rest, begins to move with constant acceleration until it reaches, after a time interval , a speed 0. Then, it moves with uniform motion at speed 0 for another time interval. The total distance travelled by the car is a) 0 b) 3 2 0 c) 3 8 0 2 + 0 d) 2 /2 e) 0 2 4
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A wheel of diameter 40. 0 cm starts from rest and rotates with a constant angular acceleration of 4rpm. At the instant the wheel has computed its second revolution, compute the radial acceleration of a point on the rim in two ways: (a) using the relationship a_rad = w^2r and (b) from the relationship a_rad = v^2/r
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