# Midterms

This quiz covers the topics in. There are ten items in this assessment.

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 1 Friction of layers in a liquid
 A. Osmosis
 B. Viscosity
 C. Turbulence
 D. Laminar flow
 2 Force per unit area
 A. Joules
 B. Watts
 C. Power
 D. Energy
 E. Pressure
 3 This principle is related to buoyancy
 A. Pascal's principle
 B. Archimedes ' principle
 C. Bernoulli' s principle
 4 We can inhale the exhaust fumes of a jeepney even when we are inside the moving vehicle. This is an application of
 A. Pascal 's principle
 B. Archimedes ' principle
 C. Bernoulli 's principle
 5 is the formula for the simple harmonic motion of a pendulum. What is the length of a pendulum's string if the period of the pendulum's vibration is 2π (2 times pi)?
 A. 4.5
 B. 9.8
 C. 12.2
 D. 41.5
 E. 61.5
 6 A person's mass is proportional to his
 A. Weight
 B. Energy
 C. Work
 D. Power
 7 The vertical velocity of a projectile at the peak of its flight is
 A. Dependent on the final horizontal velocity
 B. Equal to -9.8
 C. Equal to 9.8
 D. Zero
 8 Distance and displacement  of an object has the same value
 A. Sometimes
 B. Never
 C. Always
 9 The angle at which an object starts to slide across a surface is not dependent on its weight
 A. True
 B. False
 10 What is the density (in kg/m3 which displaces about 500 m3 in a container and whose mass is 50000?
 A. 0.1
 B. 100
 C. 1000
 D. 5000
 E. 10000
 11 A rectangular solid with a density of 10 kg per cubic meter has a height of 2000 cm. It has a length of 3 cm but the width is unknown. What is the pressure applied to the ground underneath it?
 A. 20000 Pa
 B. 20 Pa
 C. 200 Pa
 D. 1.0 atm
 E. 1 mm Hg
 12 Aerodynamics is an application of this principle
 A. Pascal's principle
 B. Archimedes ' principle
 C. Bernoulli's principle
 13 No matter where you press a toothpaste tube, paste comes out of the opening. This is an application of
 A. Pascal's principle
 B. Archimedes ' principle
 C. Bernoulli's principle
 14 An object which remains at rest means no external force are acting on it
 A. Sometimes
 B. Always
 C. Never
 15 The period of a simple pendulum follows this formula The length of the pendulum's string is 980 m. What is the period of vibration of the pendulum
 A. 29.5
 B. 12.3
 C. 33.1
 D. 45.6
 E. 62.8
 16 Unit for pressure
 A. Newtons
 B. Joules
 C. Molecules
 D. Atmosphere
 17 The force and the acceleration may have the same value and units
 A. Sometimes
 B. Always
 C. Never
 18 Airplanes can fly because of this principle
 A. Pascal's principle
 B. Archimedes ' principle
 C. Bernoulli's principle
 19 What is the density (in kg/m3 of a cube whose side 2 m and whose mass is 8 kg?
 A. 0
 B. 1
 C. 2
 D. 4
 E. 8
 20 Hydraulics is an application of this principle
 A. Pascal's principle
 B. Archimedes ' principle
 C. Bernoulli's principle
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