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WAEC Physics – Sierra Leone

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Question 161

Newton's Third Law states that for every action, there is an equal and opposite:
Forces and Newton's lawsNewton's Laws of Motioneasy

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Question 162

Which of the following best describes work done when a force moves an object through a distance?
Work, energy, powerWork and Energymedium

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Question 163

In uniform circular motion, the direction of the centripetal force is:
Circular motionCircular Motionmedium

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Question 164

Which of the following best explains why pressure decreases as altitude increases in the atmosphere?
Pressure and fluidsPressure in Fluidsmedium

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Question 165

Which phenomenon demonstrates the wave nature of light?
Light, OpticsWave Properties of Lightmedium

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Question 166

In nuclear reactions, which of the following particles is emitted during beta decay?
Nuclear physicsRadioactivity and Nuclear Decayhard

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Question 167

An object moves with uniform acceleration. Which graph represents velocity against time?
Motion (1D and 2D)Motion (1D and 2D)medium

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Question 168

A car moves in a circle of radius 20 m at a constant speed of 10 m/s. What is the centripetal acceleration?
Circular motionCircular motionmedium

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Question 169

In simple harmonic motion (SHM), what is the phase difference between displacement and velocity?
Simple harmonic motionSimple harmonic motionmedium

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Question 170

A wire of length L and cross-sectional area A is stretched by a force F. Which quantity describes the wire's ability to resist deformation?
ElasticityElasticitymedium

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