List of top Physics Questions on The speed of a travelling wave

A ball is thrown upwards with a speed \(u\) from a height \(h\) above the ground.The time taken by the ball to hit the ground is
If speed of sound in air is 340 m/s and in water is 1480 m/s. If frequency of sound is 1000 kHz, then find wavelength in water.
A runner starts from O and goes to O following path OQRO in 1 hr. What is the net displacement and average speed?
net displacement and average speed
A ball of 0.5 kg collided with wall at 30° and bounced back elastically. The speed of ball was 12 m/s. The contact remained for 1 sec. What is the force applied by wall on ball?
A stream of water flowing horizontally with a speed of 15 ms-1 gushes out of a tube of cross-sectional area 10-2m2 and hits a vertical wall nearly. The force exerted on the wall by the impact of water assuming it does not rebound is
A curved road of diameter 1.8 km3 is banked so that no friction is required at a speed of 30 m/s. What is the banking angle ?
Two bodies are projected at angles e and (90°-θ) to the horizontal with the same speed. The ratio of their times of flight is

A steel rod 100 cm long is clamped at its middle. The fundamental frequency of longitudinal vibrations of the rod are given to be 2.53 kHz. What is the speed of sound in steel?

A metre-long tube open at one end, with a movable piston at the other end, shows resonance with a fixed frequency source (a tuning fork of frequency 340 Hz) when the tube length is 25.5 cm or 79.3 cm. Estimate the speed of sound in air at the temperature of the experiment. The edge effects may be neglected.

Use the formula \(v=\sqrt\frac{γp}{ρ}\)  to explain why the speed of sound in air 

(a) is independent of pressure, 

(b) increases with temperature, 

(c) increases with humidity.

A stone dropped from the top of a tower of height 300 m splashes into the water of a pond near the base of the tower. When is the splash heard at the top given that the speed of sound in air is 340 m s–1 ? (g = 9.8 m s–2)