Master Physics with Fun Quizzes & Brain Teasers!

Ancient gold coins have been found in Greece and Italy. What property allows for gold to be stamped into coins?
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A planned high-speed train between Houston and Dallas will travel a distance of 386 kilometers in 5.40 103 seconds. What is the average speed of this train?
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does this curved graph show a function explain how you know
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Consider a spring that does not obey Hooke's law very faithfully. One end of the spring is fixed. To keep the spring stretched or compressed an amount x, a force along the x-axis with x-component Fx=kxbx2+cx3 must be applied to the free end. Here k=100N/m, b=700N/m2, and c=12000N/m3. Note that x>0 when the spring is stretched and x
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The jogger ran 3km east.4. Look at the bottom figure. Suppose that a car is 20 km due north of New York City. The cartravels north toward Albany until it is 100 km due north of New York City.
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can you pls give a question about science. like why does the sky blue? PLS HELPPP ASAP
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pls answer this due today
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A recipe for a casserole calls for 1 cup of milk. If a chef currently has 0.5 gallons of milk, how many casseroles can the chef make?
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At what point of thermometric scale does Kelvin scale reading coincide with Fahrenheit scale
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How does an object become negatively charged
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When does a scatter plot show a correlation?
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You are riding a bicycle. If you apply a forward force of 172 N, and you and the bicycle have a combined mass of 51 kg, what will be the forward acceleration of the bicycle? (Assume there is no friction)
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Which of the following scenarios is possible for the resultant velocity of an airplane in a strong wind to be 150 m/s? A. The wind is blowing at 10 m/s. The airplane is flying against the wind at 140 m/s.B. The wind is blowing at 20 m/s. The airplane is flying with the wind at 130 m/s.C. The wind is blowing at 200 m/s. The airplane is flying with the wind at 50 m/s.D. The wind is blowing at 50 m/s. The airplane is flying against the wind at 100 m/s.
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Mark is pushing a box down the hall. Mark is using 5N to push the box 20m. How much work is Mark doing?
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A cannon shoot a cannon ball. The momentum compared to the cannon ball is
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can you describe your own perspective whats Physical Science all about? PLS GUYS HELP
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BMW has introduced a program of covered scheduled maintenance for its cars. That is, when you bring in your vehicle for maintenance at a BMW dealership, BMW will cover the costs of everything (except for worn-out tires). This practice specifically targets which stage of the product life cycle?
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Why are ions formed?Group of answer choicesA.Because atoms have the same number of protons and electronsB. Because atoms want 8 valence electronsC. To make our lives difficultD. Because atoms gained neutrons
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A coin is rolling across a table at 0.23 m/s. It rolls off the table and lands 0.15 meters away from the edge of the table. How high is the table? Show all your work.
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A closed system consists of a pendulum that is swinging back and forth. Ifthe pendulum's kinetic energy decreases, what else must happen to theenergy of the system?aA. Its gravitational potential energy must decrease.B. Its total mechanical energy must increase.O C. Its total mechanical energy must decrease.O D. Its gravitational potential energy must increase.
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When energy is transferred from one part of a system to another, some of theenergy is lost during the transfer and cannot be used as it was intended.Which two sentences describe examples of this?A. An electric motor hums as it powers a conveyor beltB. Stereo speakers emit sound when powered by electrical energy.O C. Sunlight strikes a solar panel, generating electricity.O D. A car engine heats up while the car is being driven.E. Wind moves a turbine, generating electricity.
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Which could describe the properties of sedimentary rock?PLASE HELPDUE TODAY
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Which two options are forms of kinetic energy?A. Nuclear energyB. Thermal energyC. Chemical energyD. Gravitational energyE. Sound energy
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Which of the following expresses Newton's third law?a.The total momentum of an isolated system always remain constant.b.Acceleration is always accompanied by a force.c.Every action force is accompanied by an equal and opposite reaction force.d.Objects tend to remain at rest or in motion at constant speed
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