Matter and Energy II AD2024 Module 1

Frecuency is ?

• The number of cycles per unit time.

• The time it takes for one complete cycle of the motion

• 103.9 MHz

• is the number of oscillations expressed in radians

Intesnity of a wave = Energy

• True

• False

What represents a fifth harmonic of a standing wave on a string

• 5f₁

• f₁ =5

• f₅= 5

The intensity of the earthquake will be diminishing as it propagates away from the source.

• False

• True

High frecuency of a sound waves refers to ?

• Higher intensity

• Lowere intensity

• Higher pitch

• Higher decibels

What is a fluid ?

• Is not a gas

• Liquids that travel throught pipes.

• Matter that has the ability to flow in response to an applied force, therefore liquids and gases are fluids.

• Matter thatis not a liquids nor a gas.

Vibrations of particles are perpendicular to the direction of travel

• Longitudinal waves

• Periodic waves

• Transverse waves

• Oscillations

Who said the following quote :

"Give me a place to stand, and I will move the Earth."

• Pascal

• Archimedes

• Torricelli

• Volta

The word IDEAL on the phrase ideal fluids referese to :

• fun fact

• general truth

• theoretical concept

• what we allways look for

What does Bernoulli's principle state ?

• “Pressure applied to an enclosed fluid is transmitted undiminished to every part of the fluid, as well as to the walls of the container.”

• "The fluid leaves through the hole with velocity same as it would experience if dropped from the same height to the hole level."

• “The work done on a unit volume of fluid by the surrounding fluid is equal to the sum of the changes in kinetic and potential energies per unit volume during the flow.”

• Any object partially or completely sumerged in a fluid will experience a buoyant force.

  The bouyant foce is equal in magnitude to the weight of the fluid that is displaced.