Questioning is the beginning of the scientific inquiry process. True or False

aving established that a sound wave corresponds to pressure fluctuations in the medium, what can you conclude about the directio

vovangra [49]

Answer: Pressure fluctuations travel along the direction of propagation of the sound wave.

Explanation:

Sound wave is a type of longitudinal wave. It is defined as a wave which consist of vibrations of particles traveling through a medium( such as air, or water).

Sound wave is propagated by the alternating adiabatic compression and expansion of the medium. The COMPRESSIONS are regions of high air pressure while the RAREFACTIONS are regions of low air pressure. Therefore, Since a sound wave consists of a repeating pattern of high-pressure and low-pressure regions moving through a medium, it is sometimes referred to as a PRESSURE WAVE.

The direction of the vibrating particles is parallel to the direction of propagation and that's why it's a type of LONGITUDINAL WAVE. Therefore, the correct option that

concludes about the direction in which such pressure fluctuations travel is

(Pressure fluctuations travel along the direction of propagation of the sound wave.)

8 0

4 years ago

Three cars are tested in a 16 m/s frontal crash. The results of the crash tests are shown below, with data indicating how much t

Bingel [31]

Option c
Caz thought the car crashed dummy is safe u can choose option c
Mark me brainlist plz

3 0

3 years ago

Read 2 more answers

Assume that the driver begins to brake the car when the distance to the wall is d=107m, and take the car's mass as m-1400kg, its

Evgen [1.6K]

Answer:

Explanation:

a ) Let let the frictional force needed be F

Work done by frictional force = kinetic energy of car

F x 107 = 1/2 x 1400 x 35²

F = 8014 N

b )

maximum possible static friction

= μ mg

where μ is coefficient of static friction

= .5 x 1400 x 9.8

= 6860 N

c )

work done by friction for μ = .4

= .4 x 1400 x 9.8 x 107

= 587216 J

Initial Kinetic energy

= .5 x 1400 x 35 x 35

= 857500 J

Kinetic energy at the at of collision

= 857500 - 587216

= 270284 J

So , if v be the velocity at the time of collision

1/2 mv² = 270284

v = 19.65 m /s

d ) centripetal force required

= mv₀² / d which will be provided by frictional force

= (1400 x 35 x 35) / 107

= 16028 N

Maximum frictional force possible

= μmg

= .5 x 1400 x 9.8

= 6860 N

So this is not possible.

4 0

3 years ago

Select the correct boxes.

faust18 [17]

Answer:

A.this belief is especially strong in South Korea is Buddhism.

B.this belief forms a majority in many northwestern Chinese

communities is Buddhism.

Buddhism is a tradition that focuses on personal spiritual development. Buddhists strive for a deep insight into the true nature of life and do not worship gods or deities.

C. The majority of Japanese follow this belief is Shinto.

Shinto is the traditional religion of Japan that focuses on ritual practices to be carried out diligently to establish a connection between present-day Japan and its ancient past.

D. most East Asians adhere the to this belief is Islam.

Islam is a popular religion teaching that there is only one God (Arabic: Allah), and that Muhammad is the messenger of God. It is the world's second-largest religion with over 1.8 billion followers or 24% of the world's population, most commonly known as Muslims.

3 0

4 years ago

Develop an equation (with a proportionality constant) that describes the relationship between the gravitational force (fgrav), t

ivolga24 [154]

According to newton's law of gravitation, the gravitational force(F) is directly proportional to the product mass of the moon(Mm) and the mass of the planet (Mp) and it is inversely proportional to the square of the separation between them.

Fg ∝ (Mp)(Mm) →(1)

Fg ∝ 1/d²→(2)

Combining equation (1) and (2),

Fg ∝ (Mp)(Mm)/d²

Fg = G(Mp)(Mm)/d²

This is an equation that describes the relation between mass of moon (Mm) and mass of planet (Mp) and separation(d) between them.

To support the claim in favuor of this equation we use this equation to obtain the value of acceleration due to gravity on earth.

Let m be the mass of an object on earth then Fg between earth (Mp) and mass of an object is obtained by:

Fg = G(Mp)(m)/R², where R= Radius of earth

This force is equal to the weight of an object i.e.,

g= G(Mp)/R²

Putting the values of G, Mp and R , we get, g=9.81 m/s²

which is the value we obtained on earth for acceleration due to gravity.

To know more about gravitational constant, visit:

brainly.com/question/13959861

#SPJ4

5 0

1 year ago