3A1 Chapter 7 Practice Questions with 100% complete solutions
rated A+
1. A. Normal or
In a fluid contained by solid boundaries the
prependicular
pressure ex- erted by the enclosed fluid on its
boundaries is always:
A. Normal or prependicular
B. Constant in all directions
C. Equal
D.Measured in kgs
E. Acting on the side and bottoms
2. C. 35.6 cm A block of wood measures 20 cm wide x 15 cm
deep and has a specific gravity of 0.75. If its mass
is 8 kg, find the length of the block.
A. 3.56 cm
B. 13.56 cm
C. 35.6 cm
D.105 mm
E. 10,667 cm
3. D. 9 The wheel-and-axle system below has
dimensions d = 300 mm and R = 1.5 m. If the
efficiency of the machine is 90%, find the
mechanical advantage of the system.
A. 4.5
B. 5
C. 7
D.9
E. 10
4. A. A substance compared to the density of water
1/
14
, 3A1 Chapter 7 Practice Questions with 100% complete solutions
rated A+
The "relative
density" of a
substance refers
to the density of:
2/
14
rated A+
1. A. Normal or
In a fluid contained by solid boundaries the
prependicular
pressure ex- erted by the enclosed fluid on its
boundaries is always:
A. Normal or prependicular
B. Constant in all directions
C. Equal
D.Measured in kgs
E. Acting on the side and bottoms
2. C. 35.6 cm A block of wood measures 20 cm wide x 15 cm
deep and has a specific gravity of 0.75. If its mass
is 8 kg, find the length of the block.
A. 3.56 cm
B. 13.56 cm
C. 35.6 cm
D.105 mm
E. 10,667 cm
3. D. 9 The wheel-and-axle system below has
dimensions d = 300 mm and R = 1.5 m. If the
efficiency of the machine is 90%, find the
mechanical advantage of the system.
A. 4.5
B. 5
C. 7
D.9
E. 10
4. A. A substance compared to the density of water
1/
14
, 3A1 Chapter 7 Practice Questions with 100% complete solutions
rated A+
The "relative
density" of a
substance refers
to the density of:
2/
14
