A rectangular solid black has length 10cm bread... - JAMB Physics 2024 Question
A rectangular solid black has length 10cm, breadth 5cm and height 2cm. If it lies on a horizontal surface, and has density 100kg/m\\(^3\\), calculate the pressure it exerts on the surface.
A
200 N/m\(^2\)
B
A. 300 N/m\(^2\)
C
B. 100 N/m\(^2\)
D
C. 400 N/m\(^2\)
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Correct Option: A
Here's how to calculate the pressure:
-
Convert units:
- Length (l) = 10 cm = 0.1 m
- Breadth (b) = 5 cm = 0.05 m
- Height (h) = 2 cm = 0.02 m
- Density (ρ) = 100 kg/m³
-
Calculate the volume (V):
- V = l × b × h = 0.1 m × 0.05 m × 0.02 m = 0.0001 m³
-
**Calculate the mass (
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