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Physics

Uncover the laws that govern the universe, from the smallest particles to the vastness of space. Physics seeks to explain the fundamental mechanisms of the natural world.

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Questions
Q: Why does flying from Seattle to Boston take less time than flying from Boston to Seattle in the same aircraft
2 answers
Q: Make a prediction.what do you think will happen if you place a smoke source near the hole
1 answer
Q: What is velocity acceleration
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Q: What are magnitude and direction
2 answers
Q: How does electricity the most versatile from energy
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Q: The movement of a floating object on a pond when struck by a wave
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Q: What did William Crookes use to test John Dalton's theory
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Q: How does the sound of a bell change by the force it is shook by
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Q: What is a path that one object such as a planet takes as it moves around another object
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Q: Is acceleration caused by two forces which are opposite to each other
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Q: What is an attractive force between two objects due to mass
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Q: Water flows at 2 ft per sec through a pipe of diameter 8 inches so in terms of pi what is the volume which leaves the pipe per second
2 answers
Q: Give two examples of other devicesin which the chemical energy in a battery is transformed into electrical energy
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Q: What is the energy transformation for guitar
1 answer
Q: If velocity is positive which would most likely yield a negative acceleration
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Q: Which principle states that when the speed of a flowing fluid increases the pressure decreases
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Q: Ask us anythingThis technique is illustrated by making objects in the foreground larger than objects in the background.
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Q: Is a reference point the object to which we compare another object's motion
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Q: If total (PE plus KE) is conserved
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Q: A high voltage combined with a low current will deliver less power than a moderate voltage combined with a moderate current.
1 answer
Q: The units for force are kg-ms. true or false
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Q: Free falling objects accelerate at about 10 ms because the forces of friction and air resistance act on them true or false
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Q: The overall net force acting on a leaf falling is due to the gravitational force and air resistance exerted on the leaf true or false
1 answer
Q: As the mass and distance between two objects decrease so does the gravitational force exerted between them true or false
1 answer
Q: As the mass of an object increases so does its gravitational force true or false
1 answer
Q: Charge of an atom
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Q: The normal force is the force that a surface exerts when you move an object over it true or false
1 answer
Q: A simple machine doubles the amount of load you can lift with the same force
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Q: What is the half-life of potassium-40 if a potassium-40 sample starts with 50 atoms and 1.25 billion years later there are 25 atoms
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Q: Summarize the physical reasons that sound waves travel at different speeds through different mediums
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Q: Sliding friction increases if the of the sliding object increases.
1 answer
Q: According to the chart developed the principle of the lever.
2 answers
Q: If a sound traveling through a medium has a frequency of 520 Hz and a wavelength of 6.92 Ms what is its speed
1 answer
Q: What areas of the work force can science be applied to
1 answer
Q: What happens when the wavelength of electromagnetic waves decreases
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Q: A student made a model of isostasy by placing a block of wood in a beaker of water. How can the student demonstrate isostatic rebound using her model
4 answers
Q: Does the temperature decrease when thermal energy decreases
1 answer
Q: If an object floats the volume of the displaced water
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Q: What is best described by the frequency of a wave
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Q: An object with gravity so strong nothing can escape
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Q: A force of 20 newtons is required to push a cart weighing 30 newtons 40 meters across a room. From this effort how many joules of work are performed
2 answers
Q: A longitudinal wave causes its medium in what direction
1 answer
Q: Allowing light to pass through so that objects can be clearly seen on the other side
1 answer
Q: Vinegar is good or bad conductor
1 answer
Q: True or false setting a heavy suitcase down on the ground requires you to do negative work on it
2 answers
Q: A mechanical wave is created when a source of energy causes
2 answers
Q: An area where the particles in a medium are spaced close together is called a
1 answer
Q: What kind of wave is caused by shaking a rope
1 answer
Q: What would happen to the coil if the current passing through it was too large
1 answer
Q: In an isolated system two cars each with a mass of 1000 kg collide car 1 is intitially at rest while car 2 was moving at 10 ms they move off together what is their speed
1 answer
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