Question

Differentiate between
> G and g
> vector and scalar quantities
> distance and displacement
> speed and velocity
> interia and momentum
> mass and weight
> thrust and pressure
> bouyant and gravitational forces
> density and relative density
> potential and kinetic energies
> power and energy
> commercial unit and si unit of energy
> transverse and longitudinal waves
> compressions and rarefractions
> pitch and loudness
> echo and reverberation
> infrasound and ultrasound

Answer 1

G-Universal law of gravitation
g-gravity due to earth

Answer 2

Whoa ! lot of questions ^_^! 

G and g

G is gravitational constant whose value is 6.67 x 10 ^-11
while g is acceleration due to gravity is 9. 8 m/s ²

vector and scalar quantities

Scalar have only magnitude 
but vectors depend on both magnitude and direction 

distance and displacement

Distance is scalar and displacement is vector 

speed and velocity

speed = distance / time 

velocity = displacement / time 



interia and momentum

inertia is the inability of body to resist its state of motion or rest 

Momentum is impact as p = mv 


mass and weight

mass is constant for particular body 

weight depends on g weight is also force 


thrust and pressure

Thrust is a force while pressure is force / area 



bouyant and gravitational forces 

Gravitational force is a weak force in any two bodies 
while buoyant force acts opposite when anything floats in water 


bouyant and gravitational forces

Density is mass per unit volume 
while relative density = density of body / density of water at 4*C 


potential and kinetic energies

Energy posses by body when it is in rest is potential energy while in motion it is called kinetic energy 


power and energy  

Energy is the amount of work while power is energy per unit time 



commercial unit and si unit of energy

Commercial unit = calories 

Si unit - joules 

transverse and longitudinal waves

Transverse 


A transverse wave is a moving wave that consists of oscillations occurring perpendicular to the direction of energy transfer.
while A wave that oscillates back and forth on an axis that is the same as the axis along which the wave propagates.

compression and rarefractions 

when sounds travels the molecules when come closer is called compression when they separate is called rarefraction 

pitch and loudness 

pitch is the quality of a sound governed by the rate of vibrations producing it

loudness  is attribute of a sound that determines the magnitude of the auditory sensation produced

Echo is the repetition of sound after a fixed interval of time while reverberation is a persistence of sound after the sound is produced.

infrasound and ultrasound

Infrasound - when the frequency of sound is smaller than 20 Hz 

Ultrasound - when the frequency  of sound is greater than 20000 Hz