What is the unit for measuring the amplitude of a sound?
Decibel
Coulomb
Hum
Cycles
Reading of a barometer going down is an indication of
snow
storm
intense heat
rainfall
Decibel is the unit for
speed of light
radio wave frequency
intensity of sound
intensity of heat
One fathom is equal to
6 feet
6 meters
60 feet
100 cm
Fathom is the unit of
sound
depth
frequency
distance
Light year is a measurement of
speed of aeroplanes
Stellar distances
speed of rockets
Very small time intervals are accurately measure by
White dwarfs
Quartz clocks
Atomic clocks
Pulsars
One kilometre is equal to how many miles?
0.84
0.5
1.6
0.62
kilohertz is a unit which measures
power used by a current of one ampere
electromagnetic radio wave frequencies
voltage
electric resistance
One horse power is equal to
746 watts
748 watts
756 watts
736 watts