Engineering Board Exam Reviewer · Physics · easy

The speed of sound in air at about 20 °C is approximately:

1. 3 × 108 m/s
2. 343 m/s
3. 1500 m/s
4. 5000 m/s

Answer

B. 343 m/s

Solution

Sound is faster in liquids (~1500 m/s in water) and solids (~5000 m/s in steel).

More Physics questions

1. A wave in which the particles of the medium vibrate parallel to the direction of wave propagation is a:
2. The period of a simple pendulum (small oscillations) depends on:
3. Simple harmonic motion occurs when the restoring force is:
4. The value of the universal gravitational constant G is approximately:
5. Kepler's third law states that the square of a planet's orbital period is proportional to:
6. Kepler's first law states that planets move in:
7. The force that keeps a body moving in a circular path is called:
8. The work–energy theorem states that the net work done on a body equals its change in:
9. The coefficient of restitution for a perfectly inelastic collision is:
10. Impulse is equal to the:

All Physics Reviewer questions