If you pack more mass into a certain volume, the density will increase.
Answer:
Human activities commonly affect the distri-
bution, quantity, and chemical quality of water
resources. The range in human activities that affect
the interaction of ground water and surface water is
broad.Explanation:
Answer:
The answer to this is
6600 Hz to 19,800 Hz
Explanation:
The shape of the human ear is analogous to a closed ended pipe hence
we have λ = 4L or wavelength = 4 * length of the child ear
The frequency c/λ where c = speed of sound = 343 m/s
hence the child's audible range is multiples of 343/(4*0.13) =6600Hz
or 13200 Hz or 19,800 Hz
The generally quoted range of human hearing is 20 Hz to 20 kHz
Yes, they are synonymous terms.
Answer:
energy = 391.902 kJ /mol
Explanation:
given data
wavelength = 305 nm = 305 ×
m
to find out
average energy
solution
we know speed of light is 3 ×
m/s
so we find frequency here first by speed of light formyla
speed = wavelength × frequency
3 × = 305 × × frequency
frequency = 9.8360 ×
so energy is
energy = hf
here h = 6.62 ×
J-s
so
energy = 6.62 × × 9.8360 ×
energy = 6.51 ×
J
so
energy = 6.51 × × 
kJ/mol
energy = 391.902 kJ /mol
