Physics
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 [...]
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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 [...]
The wave pattern on a stretched string is shown in figure. Interpret what kind of wave is this and find its wavelength?
12
Nov
The wave pattern on a stretched string is shown in figure. Interpret what kind of wave is this and find its wavelength? The wave pattern on a stretched string is shown in figure. Interpret what kind of wave is this and find its wavelength? November 12, 2020 Category: Chapter 14 - Waves , NCERT Exemplar [...]
A pipe 20 cm long is closed at one end. Which harmonic mode of the pipe is resonantly excited by a source of 1237.5 Hz ? (sound velocity in air =30ms^−1)
12
Nov
A pipe 20 cm long is closed at one end. Which harmonic mode of the pipe is resonantly excited by a source of 1237.5 Hz ? (sound velocity in air =30ms^−1) A pipe 20 cm long is closed at one end. Which harmonic mode of the pipe is resonantly excited by a source of 1237.5 [...]
A steel wire has a length of 12 m and a mass of 2.10 kg. What will be the speed of a transverse wave on this wire when a tension of 2.06 × 10^4N is applied?
12
Nov
A steel wire has a length of 12 m and a mass of 2.10 kg. What will be the speed of a transverse wave on this wire when a tension of 2.06 × 10^4N is applied? A steel wire has a length of 12 m and a mass of 2.10 kg. What will be the [...]
When two waves of almost equal frequency n1 and n2 are produced simultaneously. What is the times interval between successive maxima ?
12
Nov
When two waves of almost equal frequency n1 and n2 are produced simultaneously. What is the times interval between successive maxima ? When two waves of almost equal frequency n1 and n2 are produced simultaneously. What is the times interval between successive maxima ? November 12, 2020 Category: Chapter 14 - Waves , [...]