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Physics
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.
225k
Questions
Q: The law that states tha enegry is neither created or destoryed but can be converted from one form to another is called the
3 answers
Q: More than 85 percent of all energy used worldwide comes form what source
1 answer
Q: How many pounds of force must a guardrail and top rail be able to withstand
1 answer
Q: What force work against gravity as water infiltrates the soil and moves underground
2 answers
Q: How much work must be done on a 1000-kg car to increase its speed from 1 ms to 2 ms
2 answers
Q: How does the amount of electrical energy used compared to the amount of light energy produced
1 answer
Q: Object B has a length of 10 cm a width of 5 cm and a height 2 cm. Its mass is 300g. Find the density of object B.
1 answer
Q: Which car has the most kinetic energy
1 answer
Q: What happens to a beam of light if you put a piece of wood in front of it
2 answers
Q: A paper airplane with mass 0.1 kg is flying 1.5 m above the ground with a speed of 2 ms. What is the total mechanical energy of the paper airplane
2 answers
Q: Adjective of inflate
1 answer
Q: Materials that only partially allow light pass through blurring the light as it passes
3 answers
Q: A form of energy that we can see
1 answer
Q: The internal pressure of a cylinder with one ounce of liquid R-410A refrigerant which has been sitting in a 100 degree Fahrenheit truck is
1 answer
Q: What happens to the air pressure as you increase in altitude
2 answers
Q: Describe how a solar collector might work
1 answer
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
2 answers
Q: What are magnitude and direction
2 answers
Q: How does electricity the most versatile from energy
1 answer
Q: The movement of a floating object on a pond when struck by a wave
5 answers
Q: What did William Crookes use to test John Dalton's theory
2 answers
Q: How does the sound of a bell change by the force it is shook by
1 answer
Q: What is a path that one object such as a planet takes as it moves around another object
1 answer
Q: Is acceleration caused by two forces which are opposite to each other
2 answers
Q: What is an attractive force between two objects due to mass
1 answer
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
1 answer
Q: What is the energy transformation for guitar
1 answer
Q: If velocity is positive which would most likely yield a negative acceleration
1 answer
Q: Which principle states that when the speed of a flowing fluid increases the pressure decreases
1 answer
Q: Ask us anythingThis technique is illustrated by making objects in the foreground larger than objects in the background.
1 answer
Q: Is a reference point the object to which we compare another object's motion
2 answers
Q: If total (PE plus KE) is conserved
1 answer
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
1 answer
Q: Free falling objects accelerate at about 10 ms because the forces of friction and air resistance act on them true or false
1 answer
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
2 answers
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
1 answer
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
1 answer
Q: Summarize the physical reasons that sound waves travel at different speeds through different mediums
1 answer
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
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