A boat is travelling in a river with a speed of 10 m/s along the stream flowing with a speed of 2m/s. From this boat, a sound transmitter is lowered into the river through a rigid support. The wavelength of the sound emitted from the transmitter inside the water is 14.45 mm. Assume that attenuation of sound in water and air is negligible. What will be the frequency detected by a receiver kept inside downstream?

A boat is travelling in a river with a speed 10 m//s along the stream flowing with a speed 2 m//s . From this boat , a sound transmitter is lowered into the river throught a rigid support. The wavelength of the sound emitted from the transmitter inside the water is 14.45 mm . Aassume that attenuation of sound in water and air is neglisible. (a) What will be the frequency delected by a receiver kept inside the river downstream ? (b) The transmitter and the reciver are now pulled up into air. The air is blowing with a speed 5 m//s in the direction opposite the river stream. Determine the frequency of the sound delected by the reciver. (Temperature of the air and water = 20^(@) C , Density of river water = 10^(3) kg//m^(3) , Bulk modulus of the water = 2.088 xx10 ^(9) Pa , Gas constant, R= 8.31 J//mol - K , Mean molecular mass of air = 28.8xx 10 ^(-3) kg//mol , C_(p)//C_(V) for air = 1.4

A boat is travelling in a driver in river with a speed 10 m//s along the stream flowing with a speed 2m//s . From this, boat, a sounjd transmitter is lowered into the river through a right support. The wavelength of the sound emitted from the transmitter inside the water is 14.45 mm . Assume that attention of sound in water and air is negligible. (a) What will be frequency detected by receiver kept inside downstream? (b) The transmitter and the receiver are now pulled up into air. The air is blowing with a speed 5 m//s in the direction opposite the river stream. Determine the frequency of the sound detected by the receiver. (Temperature of the air and water = 20^(@)C , Density of river water = 10^(3) kg//m^(3) . Bulk modulus of the water = 2.088 xx 10^(6) Pa , Gas constant R = 8.31 J//mol-K , Mean molecular mass of air = 28.8 xx 10^(-3) kg//mol , C_(P)//C_(V) for air = 1.4 ).

A boat is travelling in a river with a speed 2m//s . From this boat, a sound transmitter is lowered into the river through a rigid support. The wavelength of the sound emitted from the transmitter inside the water is 14.45mm . Assume that attenuation of sound in water and air is negligible. (a) What will be the frequency detected by a receiver kept inside the river downstream? (b) The transmitter and the receiver are now pulled up into air. the air is blowing with a speed 5m//s in the direction opposite the river stream. Determine the frequency of the sound detected by the receiver. (Temperature of the air and water = 20^(@)C , Density of river water = 10^(3) kg//m^(3) , Bulk modulus of the water = 2.088 xx 10^(9) Pa, gas constant R = 8.31 J//mol-K , Mean molecular mass of air = 28.8 xx 10^(-3) kg//mol , C_(P)//C_(V) for air = 1.4 )

A person rows a boat in a water with a speed of 4 ms^(-1) . Water in the river is flowing with a speed of 2 ms^(-1) . If the person rows the boat perpendiculat to thedirection of flow, find resultant velcity of the boat and time taken by boat to cross the river if widthe of the river is 400 m .

The wavelength of the sound emitted by a tuning fork in air is 3m. Speeds of sound in air and in water are 330 m/s and 1400 m/s respectively. Wavelength of this sound in water is

The driver of a car travelling with a speed of 30 m/s towards a wall sounds a siren of frequency 500 Hz. If the velocity of sound in air is 330 m/s, then the frequency of the sound reflected from the wall and as heard by the driver is

A boat covers a distance of 14 km in 4 hours along the flow. What is the speed of the boat in still water, if the speed of the flow of water is 2 km/h?

A fire whistle emits a tone of 170 Hz. Take the speed of sound in air to be 340 m/s. The wavelength of this sound is about

A boat travels with a speed of 15km/hr in still water.If a river flowing at 5km/hr ,the boat travels some distance downstream and then returns.The ratio of average speed to the speed in still water is