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4 years ago

When riding on a plane, passengers not only move through space but they move through______as well.

Physics

2 answers:

Ludmilka [50]4 years ago

8 0

Answer:

Explanation: the atmosphere

poizon [28]4 years ago

5 0

Answer:

I believe the answer is that they are moving through the atmosphere

Explanation:

Earth's atmosphere is 78% nitrogen, 21% oxygen, 0.9% argon, and 0.03% carbon dioxide. < just a more technical way to say atmosphere...

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Why VR of second class lever is greater than 1?

Olin [163]

Second class lever has mechanical advantage always more than one as load is in between fulcrum and effort making the effort arm longer than the load arm. It multiplies force. ... It does not multiply force but changes the direction of force.

3 0

3 years ago

Read 2 more answers

MathPhys pls help with my physics homework !

Papessa [141]

Answer:

003) 2. is the same as when it started from rest

004) 4. tAB / tA'B' = 1

005) vA/vA' = 1/2

Explanation:

I will do 3, 4, and 5 as examples.

003) Impulse = change in momentum

F Δt = m Δv

The same force and same time interval are exerted on the cart, so it's the same impulse. Therefore, the change in momentum is the same as when the cart started from rest.

004) In each case, the block has the same initial height and the same initial vertical velocity, so the time to land is the same.

005) In the inelastic case:

momentum before = momentum after

M₁ v₁ = (M₁ + m₂) vA

vA = M₁ v₁ / (M₁ + m₂)

In the elastic case:

M₁ v₁ = -M₁ v₁' + m₂ vA'

v₁' = (m₂ vA' − M₁ v₁) / M₁

Energy is also conserved in elastic collisions:

½ M₁ v₁² = ½ M₁ v₁'² + ½ m₂ vA'²

M₁ v₁² = M₁ v₁'² + m₂ vA'²

M₁ v₁² = M₁ (m₂ vA' − M₁ v₁)² / M₁² + m₂ vA'²

M₁ v₁² = (m₂ vA' − M₁ v₁)² / M₁ + m₂ vA'²

M₁² v₁² = (m₂ vA' − M₁ v₁)² + M₁ m₂ vA'²

M₁² v₁² = m₂² vA'² − 2 m₂ M₁ vA' v₁ + M₁² v₁² + M₁ m₂ vA'²

0 = m₂² vA'² − 2 m₂ M₁ vA' v₁ + M₁ m₂ vA'²

0 = m₂ vA' − 2 M₁ v₁ + M₁ vA'

2 M₁ v₁ = (m₂ + M₁) vA'

vA' = 2 M₁ v₁ / (m₂ + M₁)

Therefore:

vA/vA' = 1/2

8 0

3 years ago

Two identical speakers are emitting a constant tone that has a wavelength of 0.50 m. Speaker A is located to the left of speaker

Marianna [84]

Answer:

a) and c).

Explanation:

For a complete destructive interference occur, it must be met the following condition relating the wavelength, and the difference in the paths taken by the sound emitted by the sources until arriving to the listening point:

d = |dA- dB| = (2n-1)*(λ/2)

For n= 1, d = λ/2 = 0.25 m, it doesn't meet any of the cases.

For n=2, d= 3*(λ/2) = 0.75 m

In the case a) we have dA = 2.15 m and dB = 3.00 m, so dB-dA = 0.75 m, which means that in the location stated by case a) a complete destructive interference would occur.

For n=3, d= 5*(λ/2) = 5*0.25 m = 1.25 m.

This is just the case c) because we have dA = 3.75 m and dB = 2.50 m, so dA-dB = 1.25 m, which means that in the location stated by case c) a complete destructive interference would occur also.

The remaining cases don't meet the condition stated above, so the statements found to be true are a) and c),

5 0

3 years ago

*brainlest* An object accelerates from rest with a constant acceleration of 2m/s^2. How far will it have moved after 9s? Equatio

boyakko [2]

Answer: You throw an object upwards from the ground with a velocity of 20m/s and it is subject to a downward

acceleration of 9.8 m/s2. How high does it go?

Given Formula Set up Solution

vi=20 m/s

vf=0 m/s

a=-9.8 m/s2

x=?

2 = vi

2 + 2a x (0 m/s)2= (20 m/s)2 + 2 (-

9.8 m/s2) x

x=20.4 meters

Explanation: i known/ i hoped that helped.

6 0

3 years ago

The area of the brain involved with comprehension of speech is

PSYCHO15rus [73]

Wernicke's area is where comprehension of speech is

8 0

3 years ago