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Define the term applied force.
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It is a force that is applied to an object by a person or another object. |
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Force is a push or a pull that can cause an object to move, speed up, slow down, or change its direction.
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| It is the angle between the normal line and the incident ray. |
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| It is the angle between the normal line and the reflected ray. |
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| It is the angle between the normal line and the refracted ray. |
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It is the light ray that approaches the mirror.
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| It is the line perpendicular to the surface. |
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| It is the light ray that leaves the mirror. |
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| It is the light ray that bends (changes direction and speed) as it passes through the boundary of two media. |
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It is a substance through which a wave moves. |
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It is the force exerted by a surface as an object moves across it or makes an effort to move across it. |
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It is the force that is supplied through a string, rope, cable or wire when it is pulled tight by forces acting from opposite ends. |
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| Define the term spring force. |
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Definition
It is the force exerted by a compressed or stretched spring upon any object that is attached to it. |
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Hooke’s Law states that the amount that the spring extends is proportional to the amount of force exerted on it. |
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It refers to the amount of matter that is contained by the object.
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| Define the term mechanical wave. |
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It is a wave that transfers energy through a medium (matter /substance). |
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It is the force of gravity acting upon that object. |
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It is a special type of frictional force that acts upon objects as they travel through the air. |
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It is the unit of frequency (number of waves per second). |
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It is unit of wavelength (distance between crest to crest or the distance between trough to trough) and amplitude is the distance between a line through the middle of a wave and a crest or trough).
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| It is the unit for speed. |
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| State the law of reflection. |
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The angle of REFLECTION equals the angle of INCIDENCE[image]
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Virtual images are images that are formed in locations where light does not actually reach. |
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