Answer:

Explanation:
given,
speed of wind, = 14 m/s
frequency of horn,f_s = 1000 Hz
speed of sound,V = 344 m/s
frequency heard by the listener
using Doppler effect
f_L is the frequency of the sound heard by the listener
f_s is the frequency of sound emitted by the listener
V is the speed of sound
v_L is the speed of listener
v_s is the speed of source
now,
considering the frame of reference in which wind is at rest now, both listener and the source will be moving at 14 m/s
now on solving we will get

hence, the frequency heard by the listener is equal to 1000 Hz
Answer:
7.4 x 10⁻⁵ T.
Explanation:
Emf induced = BLv
Where B is magnetic field , L is length of rod or any other object moving in magnetic field and v is velocity of moving rod.
Here B = 56 x 10⁻⁶ T
L = 88 X 10⁻² m
v = 1.5 m/s
emf induced = 56 x 10⁻⁶ x 88 x 10⁻² x 1.5
= 7.4 x 10⁻⁵ T.
Answer:
not realy
Explanation:
dancing is a way of exercise and liking a song or you're just happy etc.
Answer:
0.14594 g/cm³
Explanation:
Density = Mass / Volume
Mass = 5400 g
Volume = 0.37 m³
Density = M /V
volume = 0.37 m³ = 37000 cm³
Density = 
= 0.14594 g/cm³
Answer:
OD. The process of cutting down irrelevant information so only the information that is useful for particular purpose remains