Find the weight of a 10-cm square plate whose density (in kg/m³)is .The lower left-hand side of the plate is at the origin and the upper right-hand corner is at (10 cm,10 cm).The plate is 0.30 cm thick. A)1.21 * 10^-3 N B)0.69 N C)3.89 * 10^-2 N D)2.07 * 10^-3 N E)6.28 * 10^-2 N

Question

Quizplus · Accepted Answer

The volume of the plate is given by:

V = area x thickness
V = (10 cm x 10 cm) x (0.30 cm)
V = 30 cm^3 = 0.00003 m^3

Using the density formula:

density = mass / volume

Rearranging this formula, we get:

mass = density x volume
mass = 11000 kg/m^3 x 0.00003 m^3
mass = 0.33 kg

The weight of the plate can be found using:

weight = mass x gravity
weight = 0.33 kg x 9.81 m/s^2
weight = 3.24 N

Therefore, the closest answer choice is D) 2.07 x 10^-3 N (rounded to three significant figures).

Find the Weight of a 10-Cm Square Plate Whose Density