pressure and vibration wave and sound

pressure and vibration wave and sound

By Nur Noviana

​https://www.youtube.com/watch?v=zlLpKzPz84Q&t=121s

Multiple Choice

after watching the video, SI unit for pressure is

• Pascal

• N

• N/ $$m^3$$  

• Joule

​ Pressure is force per unit area. What is the SI unit for pressure?

Multiple Choice

After watch the video, the definition of pressure is .....

• force per unit area

• Force per mass

Multiple Choice

After watch the video, the formula tu calculate pressure is ....

• P=F/A

• F= m.a

• P = V.I

• F = M.g

Multiple Choice

the formula to calculate hydrostatic pressure is ...

• $$\rho$$  .g .h

• $$\rho$$  .g .v

• F/A

• F. g. V

Multiple Choice

If an object submerged in water 20 m³ of water, the density of water is 1000kg/m³, the gravitational is 10 m/s^{2 ,} then the buoyant force that acts on the object is ___ (using Fa= $$\rho$$  g v)

• 200 N

• 2.000 N

• 20.000 N

• 200.000 N

Multiple Choice

1.Hydraulic brakes

2.hydraulic lifts

3.hydraulic presses

4. refrigerator

What are the three application of Pascal's law ....

• 1, 2, 3

• 2, 3 ,4

• 1, 2, 4

• all is true

Multiple Choice

Sound is produced by -----

• Heat energy

• Low temperatures

• Vibrations

• Friction

Multiple Choice

True or False: Sound needs a medium.

• True

• False

Multiple Choice

What is a repeating disturbance or movement that transfers energy through a medium or space?

• Energy
• Wave
• Trough
• Wavelength

Multiple Choice

What is represented by A?

• amplitude
• wavelength
• crest
• trough

Multiple Choice

True or false: Sound waves are mechanical waves.

• True
• False

Multiple Choice

What part is the arrow pointing to?

• Crest
• Trough
• Amplitude
• Wavelength

Multiple Choice

What part is the arrow pointing to?

• Crest
• Trough
• Amplitude
• Wavelength

Multiple Choice

• P-Q-R

• Q-R-Q

• P-Q-R-Q

• P-Q-R-Q-P

Multiple Choice

The pendulum swings from point A-B-C-B-A in 1 second, the period of pendulum is  ...

• 1/2

• 1

• 2

• 5

Multiple Choice

• 100

• 150

• 200

• 250