GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Weight
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Speed
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Time
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Energy
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Detailed explanation-1: -Examples of scalars are volume, density, speed, energy, mass, and time. Other quantities, such as force and velocity, have both magnitude and direction and are called vectors.
Detailed explanation-2: -Energy = Work= F*s, here both the force and the time is vector quantity. And we know that the product of two vector quantities give the scalar quantity. So we can say that energy is a scalar quantity.
Detailed explanation-3: -Energy is a scalar quantity as it has only magnitude.
Detailed explanation-4: -Length, Time, Mass, Temperature, Energy, Direct Current (DC), Frequency, Volume, Speed, Amount of substance, Luminous intensity, Density, Concentration, Refractive Index, Work, Pressure, Power, Charge, Electricity Potential, Entropy..
Detailed explanation-5: -temperature – eg 10 degrees Celsius (°C) mass – eg 5 kilograms (kg) energy – eg 2, 000 joules (J) distance – eg 19 metres (m) speed – eg 8 metres per second (m/s) density – eg 1, 500 kilograms per metre cubed (kg/m 3)