3NA Physical Quantities, Units and Measurements

Define vector quantity.

• Quantity which has magnitude.

• Quantity which has both magnitude and direction

• Quantities that cannot be defined in term of other physical quantities

• Quantities derived from combination of base quantities through multiplication or division or both

Choose TWO(2) examples of base quantity

• Mass and density

• Length and area

• Length and mass

• Mass and velocity

Tags

NGSS.MS-PS3-1

Determine the reading of the following measurement tools.

• 2.72 cm

• 2.78 cm

• 2.82 cm

• 2.88 cm

Convert 75𝜇𝑔 𝑡𝑜 𝑔

• 75000000 g

• 0.0075 g

• 0.000075 g

• 75000 g

By using prefixes, we can write 335 × 10^-8 s as

• 0.335 µs

• 3.35 µs

• 33.5 µ

• 335 µs

Find the readings of the vernier calliper. Assume that there is no zero error

(a)  

Find the readings of the vernier calliper. Assume that there is no zero error.

(a)  

Find the readings of the vernier calliper. Assume that there is no zero error.

(a)  

• 5.83 mm

• 5.83 cm

• 6.83 mm

• 6.83 cm

• 7.20 mm

• 7.20 cm

• 9.20 cm

• 9.20 mm