Openscied Physics

Two sound waves of frequencies 300 Hz, 600 Hz travels in air, so the ratio between the speed ------------

• a. 1/2

• b. 1

• c. 2

• d. 1/4

Tags

NGSS.HS-PS4-1

A drop of water fill on a surface of a still water, so 120 waves ripples and produced during half minute. If the radius of the external circle is 3 m, the speed of propagation of the wave equal -------------

• a. 0.1 m/s

• b. 1 m/s

• c. 0.5 m/s

• d. 0.01 m/s

Tags

NGSS.HS-PS4-1

simple pendulum takes 0.01 s to reach the maximum displacement from the equilibrium position, so its frequency equal -----------------

• a. 20 Hz

• b. 25 Hz

• c. . 50 Hz

• d. 100 Hz

Tags

NGSS.HS-PS4-1

If the time interval between the the pass of the first Crest and 10th Crest by a point in the bath of motion is 0.2 s, when the frequency is -------------

• a. 35 Hz

• b. 45 Hz

• c. 55 Hz

• d. 65 H

Tags

NGSS.HS-PS4-1

When two different tuning fork of different frequencies vibrate in air, there waves have ---------

• a. different periodic time

• b. wavelength

• c,. the same speed

• all the previous

Tags

NGSS.HS-PS4-1