What is the correct symbol for a LDR (light dependent resistor)?
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Science
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9th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
The symbol for a Light Dependent Resistor (LDR) is a rectangle with two arrows pointing towards it, indicating light.
2.
FLASHCARD QUESTION
Front
What is the primary function of a thermistor in a circuit?
Back
To measure temperature changes.
3.
FLASHCARD QUESTION
Front
What is the normal force?
Back
The normal force is the force exerted by a surface to support the weight of an object resting on it, acting perpendicular to the surface.
4.
FLASHCARD QUESTION
Front
What is half-life in the context of radioactive decay?
Back
Half-life is the time required for half of the radioactive atoms in a sample to decay.
5.
FLASHCARD QUESTION
Front
If the half-life of a substance is 2.4 minutes, how much of a 100.0 g sample remains after 7.2 minutes?
Back
12.5 g.
6.
FLASHCARD QUESTION
Front
What is the definition of weight force?
Back
Weight force is the force exerted by gravity on an object, calculated as the mass of the object multiplied by the acceleration due to gravity (W = mg).
7.
FLASHCARD QUESTION
Front
What is the difference between applied force and frictional force?
Back
Applied force is the force applied to an object to move it, while frictional force opposes the motion of the object.
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