A tuning fork of frequency 340Hz is vibrated just above a cylindrical tube of height 1.2m. If water is slowly poured into the tube; at what maximum height will resonance occur. [speed of sound in air = 340ms−¹]

A tuning fork of frequency 340Hz is vibrated just above a cylindrical tube of height 1.2m. If water is slowly poured into the tube; at what maximum height will resonance occur. [speed of sound in air = 340ms−¹]

by | Nov 14 | Physics JAMB

A. 0.95m B. 0.60m C. 0.50m D. 0.45m Correct Answer: Option D – 0.45m Explanation In vibration in a closed pipe/tube, the first resonance occurs at a position L = V/4f, when reading from the top of the tube, L1 = _340 4 x 340 = 0.25m L2 = 3V/4f L2 = 3 x 340 4 x...
A tuning fork of frequency 340Hz is vibrated just above a cylindrical tube of height 1.2m. If water is slowly poured into the tube; at what maximum height will resonance occur. [speed of sound in air = 340ms−¹]

A hose of cross-sectional area 0.5m² is used to discharge water from a water tanker at a velocity of 60ms−³ in 20s into a container. If the container is filled completely, the volume of the container is

by | Nov 14 | Physics JAMB

A. 240m3 B. 600m3 C. 2400m3 D. 6000m3 Correct Answer: Option B – 600m3 Explanation Vol = cross-sectional area x length ∴ vol. of water disharged per sec = 60ms-1 x 0.5m = 30m3 5-1 => Vol. of water discharged in the said 20s = 30m3 x 20 = 600m3 ∴ vol. of the...
A tuning fork of frequency 340Hz is vibrated just above a cylindrical tube of height 1.2m. If water is slowly poured into the tube; at what maximum height will resonance occur. [speed of sound in air = 340ms−¹]

On top of a spiral spring of the force constant 500Nm−¹ is placed a mass of 5 x 10−³ kg. If the spring is compressed downwards by a length of 0.02m and then released; calculate the height to which the mass is projected?

by | Nov 14 | Physics JAMB

A. 8 m B. 4 m C. 2 m D. 1 m Correct Answer: Option C = 2 m Explanation K = 500Nm-1; M = 5 x 10-3kg; e = 0.02m; g = 10ms-2. The elastic potential energy stored in the compressed spring is given by = 1/2Ke2, and the energy is transformed into gravitational potential...
A tuning fork of frequency 340Hz is vibrated just above a cylindrical tube of height 1.2m. If water is slowly poured into the tube; at what maximum height will resonance occur. [speed of sound in air = 340ms−¹]

A satellite is in a parking orbit if its period is?

by | Nov 14 | Physics JAMB

A. less than the period of the earth B. more than the period of the earth C. equal to the period of the earth D. the square of the period of the earth Correct Answer: Option C – equal to the period of the earth Explanation A satellite is said to be in a parking...

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