PHYSICS 11 Scalar sample problems

PHYSICS 11Scalar sample problemsThis power point project is brought to you by group 15 of table 4. Vectors v. ScalarsVectors- something that has a magnitude and direction. - Involves DISPLACEMENTScalars- something that ONLY has a magnitude.- Involves DISTANCEScalar or Vector?Moving a block 5 metersScalarMoving a block 10 meters to the rightVectorRunning backwards 30 metersVectorCrawling 80 centimeters- ScalarKeep in mindScalars differ from vectors in that they are purely quantitative (vectors are quantitative and have direction): meaning that there are some numbers involved.

True or False: Are the following scalars?Acceleration due to gravityVolume DisplacementNumber of atoms in one mole (AKA Avogadros number)BuoyancyFrequencyMagnitude of thermal energyPath of a projectileSpring ForceSize of a an ObjectReviewAcceleration due to gravity is a scalar.FALSE:Gravity by itself is just a concept (that is, it is the long range force that keeps us on earth). Similarly, the acceleration due to gravity is a just concept because it is a qualitative observation. Only if the statement asked for the magnitude of the acceleration due to gravity would the statement be true.ReviewVolume displacement is a scalar.FALSE:Like before, volume is displacement is a qualitative observation.ReviewAvogadros Number is a scalar.TRUE:Avogadros number (aka 6.022 x 1023) is quantitative, which fits the definition of a scalar. ReviewBuoyancy is a scalar.FALSE:Buoyancy is a qualitative observation. The magnitude of the buoyant force, however, is a scalar. ReviewFrequency is a scalar.FALSE:The magnitude of frequency is a scalar. Frequency is a qualitative observation.ReviewThe magnitude of thermal energy is a scalar.TRUE. Review The path of a projectile is a scalar.FALSEReview Spring force is a scalar.FALSEReviewThe size of an object is a scalar.TRUE.