Question

Blassey has some cubes of material as shown in the figure below. She wants to find the density of one of the cube. She needs to measure two physical quantities. One of these is the mass of the cube. (a)Describe how she finds the mass of the cube [1] (b) What is the other physical quantity Blassey needs to measure and how does she measure it? [2] (c) How does she find the density using these quantities [2]

Answer 1

Answer:

answer

If the relative errors in measuring the mass and length are respectively 1.5% and 1% , the maximum error in determining the density is?

Density ρ = mV = ml3 Maximum percentage error in density Δρρ × 100 = Δmm × 100 + 3 Δll × 100 Δρρ × 100 = 1.5 + 3 × 1 = 4.5 More