Answer:
Physics contributes to the technological infrastructure and provides trained personnel needed to take advantage of scientific advances and discoveries. Physics is an important element in the education of chemists, engineers and computer scientists, as well as practitioners of the other physical and biomedical sciences.
Explanation:
A. It has a high resistivity because it opposes the movement of
electrons.
O
B. It has a low resistivity because it permits the movement of
electrons.
O
C. It has a high resistivity because it permits the movement of
electrons.
O
D. It has a low resistivity because it opposes the movement of
electrons
The statement that describes an insulator is A. It has a high resistivity because it opposes the movement of electrons.
Insulators simply mean the electrical equipment that are used to support electrical conductors as well as separate them as they do not allow the passage of current.
In an electrical insulator, the electric current doesn't flow freely. It possesses a high resistivity because it opposes the movement of electrons.
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Answer: It has a high resistivity because it opposes the movement of electrons.
Explanation: I know this because I jus took the test & picked c thinking tht this person got it right but it was actually wrong♀️
handle with a force of 87 N, how much work is done?
The work done on the wagon is 3549 J
Explanation:
The work done by a force when moving an object is given by
where:
F is the magnitude of the force
d is the displacement
is the angle between the direction of the force and of the displacement
In this problem we have the following data:
F = 87 N is the magnitude of the force
d = 44 m is the displacement of the wagon
is the angle between the direction of the force and the displacement
Substituting, we find the work done
Learn more about work:
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nuclear energy
B.
electrical energy
C.
chemical energy
D.
sound energy
The correct answer to the question is : C). Chemical energy.
EXPLANATION:
A gas stove provides energy when the gas present inside it, is burnt.
The gas contained inside it are natural gases which contain chemical energy. When gases come under fire or electric spark, the chemical energy is converted into light and heat energy.
No nuclear, electric or sound energy are consumed in providing power .
Hence, the correct statement is chemical energy.
A.
When light hits something relatively flat, smooth, and shiny, it is transmitted by the surface, allowing nearby objects to be seen on the surface.
B.
When light hits something relatively flat, smooth, and shiny, it is refracted by the surface, allowing nearby objects to be seen on the surface.
C.
When light hits something relatively flat, smooth, and shiny, it bounces off the surface, allowing reflected objects to be seen on the surface.
D.
When light hits something relatively flat, smooth, and shiny, it is absorbed by the surface, allowing refracted objects to be seen on the surface.
If a person is pushing a desk across the room, then there is an applied force acting upon the object. The applied force is the force exerted on the desk by the person. The normal force is the support force exerted upon an object that is in contact with another stable object.
hope it helps