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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: Why are Insulating materials contain spaces with air
1 answer
Q: A hammer is dropped on Planet X. If the hammer has a mass of 3 kg and a weight of 9N what is the gravitational acceleration of Planet X
1 answer
Q: Materials that allow light to pass through them are called
1 answer
Q: Is 79 degrees hot
1 answer
Q: What frequency corresponds to an absorption line at 502nm
1 answer
Q: What is the wavelength of a light of frequency 4.47 x 10 14 Hz
1 answer
Q: The water temp in the wash sink of a three compartment sink must be at least what temp
1 answer
Q: A 1.00 g sample of samarium emits alpha particles at a rate of 120 particless. The responsible isotope is space to the power of 147 S m whose natural abundance in bulk samarium is 15.0. Calculate the
2 answers
Q: In which situation does the law of conservation of momentum apply a. in the absence of greatest velocity c. in the absence of outside forces b in the presence of least velocity d. in the presence of o
1 answer
Q: Yin and yang definition
1 answer
Q: A contrast between what is expected and what happens is called what
1 answer
Q: Does a heavier object or a lighter object experience a greater gravational force
1 answer
Q: Which moving object in all likelihood will have the greatest momentum
1 answer
Q: A hammer is dropped on Planet X. If the hammer has a mass of 3 kg and a weight of 9N what is the gravitational acceleration of Planet X Is it more or less than that of Earth
1 answer
Q: A cannon of mass 100 kg launches a cannonball of mass 10 kg at a velocity of 100 ms.At what time does the cannon recoil
1 answer
Q: What can you infer about this source of electricity
1 answer
Q: What is a stretching force called
1 answer
Q: A 100 kg crate is lifted to a height of 10 meters. At this height what is the potential energy of the crate
1 answer
Q: He gravitational force between which two objects would be the most difficult to notice
2 answers
Q: A ball is rolled uphill a distance of 5 meters before it slows stops and begins to roll back. The ball rolls downhill 9 meters before coming to rest against a tree. What is the amount of displacement
1 answer
Q: A 60 kg box is pushed horizontally across the floor a distance of 20 meters. The force required is 15 N. In this effort how many joules of work are done
1 answer
Q: What is the predicted result when two different materials of equal mass absorb the same amount of energy by heat flow
1 answer
Q: Which of a following is a type of physical change
1 answer
Q: A man is carrying cement blocks weighing 200 newtons up a ladder to a platform 7 meters above the ground. He has been carrying 2 blocks per minute. How much work is done in 10 minutes
2 answers
Q: A 50 newton force is required to push a 10 kg box 30 meters across the floor. The box is then lifted up 6 meters and placed on a shelf. How much total work was done
2 answers
Q: Ask us anythingWhich of the following is an environmental consequence of nuclear energy
1 answer
Q: You are on the witness stand explaining what happened when you saw the accident. You say the cars were going about 60 miles per hour when they crashed even though at the scene you said they were only
1 answer
Q: What is the difference between tempurture and thermal energy
2 answers
Q: Some argue that wind power should be used more than it is now. What argument could someone make against the use of wind power
2 answers
Q: Describe anyone of the four phases of matter. What are the external observable properties
1 answer
Q: What happens if you unscrew a light bulb in a series circuit
3 answers
Q: A state government is trying to decide between using windmills or a nuclear power plant. What advantage does nuclear power have over wind power
2 answers
Q: A student pushes a 40-n block across the floor for a distance of 10 m how much work was done to move the block
1 answer
Q: A lever is a bar that can pivot on a fixed point
1 answer
Q: Because of convection the warmest air in the room
2 answers
Q: A lever is a bar that can pivot on a fixed point true or false
1 answer
Q: A lever is a bar that can pivot on a fixed point.
1 answer
Q: Julie ran eight laps around her school quarter-mile tarck in 18 minutes her average velocity was ms
1 answer
Q: Compare and contrast the electric force with the gravitational force
2 answers
Q: 8.18 kg in pounds
2 answers
Q: If after extensive research the expected observations predicted by a theory fail to materialize then the theory .
1 answer
Q: Select from the following some of the fundamental considerations to examine when task organizing a force
2 answers
Q: Demonstrations quickly picked up momentum during the and ldquoArab Spring and rdquo due to the use of
1 answer
Q: What happens when you push against a brick wall
1 answer
Q: A magnetic interaction only occurs if the interacting objects are touching
1 answer
Q: According to the law of reflection what is the angle of incidence
1 answer
Q: According to the law of reflection if the angle of incidence is 45 degrees what is the angle of reflection
1 answer
Q: According to the law of reflection the is equal to the angle of incidence
1 answer
Q: What is a synonym for voltage difference
1 answer
Q: What is Nikola Tesla best known for
2 answers
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