Which of the ff is an example of a stable equilibrium?
AA cone balanced on its apex
BA cone balanced on its base
CA cone on its side
DA cone balanced on the circumference of its base
ESAS · Question Bank
Physics
107 of 236 questions match · page 3 of 6. Answer in your head first, then check the solution.
If a cone is balanced on its apex, it illustrates what type of equilibrium?
Astable equilibrium
Bneutral equilibrium
Cunstable equilibrium
Dtranslational equilibrium
When the net torque acting on an object is zero, the object is in _________
Aunstable equilibrium
Bstable equilibrium
Crotational equilibrium
Dtranslational equilibrium
"An external pressure exerted on a fluid is transmitted uniformly throughout the volume of the fluid" This is known as
ABernoulli's energy theorem
BPascal's principle
CArchimedes principle
DReynold's principle
The hydraulic press is an instrument which uses one of the ff theorems. Which one?
ABernoulli's energy theorem
BPascal's principle
CArchimedes principle
DReynold's principle
The hydrometer is an instrument which uses one of the ff theorems. Which one?
ABernoulli's energy theorem
BPascal's principle
CArchimedes principle
DReynold's principle
The period of the simple harmonic motion is ________ its amplitude
Adirectly proportional
Binversely proportional
Cequal to
Dindependent of
What refers to an oscillatory motion that occurs whenever a restoring force acts on a body in the opposite direction to its displacement from its equilibrium position, with the magnitude of the restoring force proportional to the magnitude of the displacement?
ADamped harmonic motion
BPendulum
CSimple harmonic motion
DDamped harmonic oscillation
What occurs when periodic impulses are applied to a system at a frequency equal to one of its natural frequencies of oscillation?
ABeat
BResonance
CDoppler effect
DShock wave
What refers to a shell of high pressure produced by the motion of an object whose speed exceeds that of sound?
AShock wave
BMach wave
CBeat wave
DSonic wave
"When two or more waves of the same nature travel past a given point at the same time, the amplitude at the point is the sum of the amplitudes of the individual waves" This is known as
AMach principle
BDoppler principle
CPrinciple of superposition
DWave motion principle
What occurs when the resulting composite wave has an amplitude greater than that of either of the original waves?
ALocal interference
BOrdinary interference
CConstructive interference
DDestructive interference
At what intensity will sound wave starts to damage the ear of humans
A10 W/m²
B0.1 W/m²
C1 W/m²
D0.01 W/m²
How many decibels should a sound be to be barely audible?
A0
B1
C0.1
D1.5
The ratio of a speed of an object and the speed of sound is called the
AWave factor
BSupersonic numbe
CSonic number
DMach number
"The net electric charge in an isolated system remains constant". This is known as
APrinciple of conservation of attraction
BPrinciple of conservation of charge
CCoulomb's law
DPrinciple of superconductivity
What is defined as the lumious flux per unit area?
ALuminous intensity
BLuminous efficiency
CIllumination
DLumen
What refers to the brightness of a light source?
ALuminous intensity
BIllumination
CLuminous flux
DLuminous efficiency
What unit is defined in terms of the light emitted by a small pool of platinum at its melting point?
AFootcandle
BCandela
CLux
DLumen
What coating material is used in the inside of the fluorescent lamp which emits visible light when it is excited by ultraviolet radiation?
AMercury
BInert gas
CPhospor
DArgon