Chapter 14 – Waves
In a test experiment on a model aeroplane in a wind tunnel, the flow speeds on the upper and lower surfaces of the wing are 70 ms^−1 and 63 ms^−1 respectively. What is the lift on the wing if its area is 2.5 m^2 ? Take the density of air to be 1.3 kgm^−3.
12
Nov
In a test experiment on a model aeroplane in a wind tunnel, the flow speeds on the upper and lower surfaces of the wing are 70 ms^−1 and 63 ms^−1 respectively. What is the lift on the wing if its area is 2.5 m^2 ? Take the density of air to be 1.3 kgm^−3. In [...]
In problem 10.9, if 15.0 cm of water and spirit each are further poured into the respective arms of the tube, what is the difference in the levels of mercury in the two arms? (Specific gravity of mercury = 13.6)
12
Nov
In problem 10.9, if 15.0 cm of water and spirit each are further poured into the respective arms of the tube, what is the difference in the levels of mercury in the two arms? (Specific gravity of mercury = 13.6) if 15.0 cm of water and spirit each are further poured into the respective arms [...]
A U-tube contains water and methylated spirit separated by mercury. The mercury columns in the two arms are in level with 10.0 cm of water in one arm and 12.5 cm of spirit in the other. What is the specific gravity of spirit ?
12
Nov
A U-tube contains water and methylated spirit separated by mercury. The mercury columns in the two arms are in level with 10.0 cm of water in one arm and 12.5 cm of spirit in the other. What is the specific gravity of spirit ? 2 loops 3 loops and 4 loops Show that when a [...]
A hydraulic automobile lift is designed to lift cars with a maximum mass of 3000Kg. The area of cross section of the piston carrying the load is 425 cm^2. What maximum pressures would the smaller piston have to bear?
12
Nov
A hydraulic automobile lift is designed to lift cars with a maximum mass of 3000Kg. The area of cross section of the piston carrying the load is 425 cm^2. What maximum pressures would the smaller piston have to bear? 2 loops 3 loops and 4 loops Show that when a string fixed at its two [...]
A vertical off-shore structure is built to withstand a maximum stress of 10^9 Pa. Is the structure suitable for putting up on top of an oil well in the ocean ? Take the depth of the ocean to be roughly 3 km, and ignore ocean currents.
12
Nov
A vertical off-shore structure is built to withstand a maximum stress of 10^9 Pa. Is the structure suitable for putting up on top of an oil well in the ocean ? Take the depth of the ocean to be roughly 3 km, and ignore ocean currents. 2 loops 3 loops and 4 loops Show that [...]
Torricelli’s barometer used mercury. Pascal duplicated it using French wine of density 984kgm^−3. Determine the height of the wine column for normal atmospheric pressure.
12
Nov
Torricelli’s barometer used mercury. Pascal duplicated it using French wine of density 984kgm^−3. Determine the height of the wine column for normal atmospheric pressure. Torricelli's barometer used mercury. Pascal duplicated it using French wine of density 984kgm^−3. Determine the height of the wine column for normal atmospheric pressure. November 12, 2020 Category: Chapter 14 - [...]
A 50kg girl wearing high heel shoes balances on a single heel. The heel is circular with a diameter 1.0cm. What is the pressure exerted by the heel on the horizontal floor ?
12
Nov
A 50kg girl wearing high heel shoes balances on a single heel. The heel is circular with a diameter 1.0cm. What is the pressure exerted by the heel on the horizontal floor ? A 50kg girl wearing high heel shoes balances on a single heel. The heel is circular with a diameter 1.0cm. What is [...]
Show that when a string fixed at its two ends vibrates in 1 loop, 2 loops, 3 loops and 4 loops, the frequencies are in the ratio 1 : 2 : 3 : 4.
12
Nov
Show that when a string fixed at its two ends vibrates in 1 loop, 2 loops, 3 loops and 4 loops, the frequencies are in the ratio 1 : 2 : 3 : 4. 2 loops 3 loops and 4 loops Show that when a string fixed at its two ends vibrates in 1 loop [...]
A tuning fork vibrating with a frequency of 512 Hz is kept close to the open end of a tube filled with water , figure. The water level in the tube is gradually lowered. When the water level is 17cm below the open end, maximum intensity of sound in heard. If the room temperature is 20∘C, calculate (a) speed of sound in air at room temperature. (b) speed of sound in air at 0∘C (c) if the water in the tube is replaced with mercury, will there be any difference in your observations?
12
Nov
A tuning fork vibrating with a frequency of 512 Hz is kept close to the open end of a tube filled with water , figure. The water level in the tube is gradually lowered. When the water level is 17cm below the open end, maximum intensity of sound in heard. If the room temperature is [...]
Tags:
A tuning fork vibrating with a frequency of 512 Hz is kept close to the open end of a tube filled with water ,
calculate (a) speed of sound in air at room temperature. (b) speed of sound in air at 0∘C (c) if the water in the tube is replaced with mercury ,
figure. The water level in the tube is gradually lowered. When the water level is 17cm below the open end ,
maximum intensity of sound in heard. If the room temperature is 20∘C ,
will there be any difference in your observations? ,
The pattern of standing waves formed on a stretched string at two instants of time are shown of time are shown in figure. The velocity of two waves superimposing to form stationary waves is 360ms−1 and their frequencies are 256 Hz.
12
Nov
The pattern of standing waves formed on a stretched string at two instants of time are shown of time are shown in figure. The velocity of two waves superimposing to form stationary waves is 360ms−1 and their frequencies are 256 Hz. At what temperature will the speed of sound in air be 3 times its [...]