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Marizza181 [45]
3 years ago
5

If you were blindfolded and heard a siren going off and could tell that the pitch was dropping, which way could you safely assum

e that the siren was moving?
Pick all that apply.

A: It's moving towards you


B: It isn't moving at all


C: It's moving away from you
Physics
2 answers:
Rufina [12.5K]3 years ago
4 0

The right answer is c

astra-53 [7]3 years ago
3 0

The correct answer is C

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Select all the correct ANSWERS.
MissTica
The ground exerts an equal force on the golf ball.
3 0
3 years ago
An iron bar has more mass than a plastic bar of the same volume. so the iron bar will have greater inertia.
Irina-Kira [14]

The response is False, both bars, iron bars and plastic bars have de same inertia, this characteristic does not depend on the type of material, the inertia depends on his transverse section, since we can estimate in the following formula

<span>Area moment of inertia Ixx = BH3/12</span>

<span>Area moment of inertia Iyy= HB3/12</span>

6 0
3 years ago
Read 2 more answers
Honeybees accumulate charge as they fly, and they transfer charge to the flowers they visit. Honeybees are able to sense electri
Vilka [71]

Answer:

ΔE> E_minimo

We see that the field difference between these two flowers is greater than the minimum field, so the bee knows if it has been recently visited, so the answer is if it can detect the difference

Explanation:

For this exercise let's use the electric field expression

         E = k q / r²

where k is the Coulomb constant that is equal to 9 109 N m² /C², q the charge and r the distance to the point of interest positive test charge, in this case the distance to the bee

let's calculate the field for each charge

 

Q = 24 pC = 24 10⁻¹² C

         E₁ = 9 10⁹ 24 10⁻¹² / 0.20²

         E₁ = 5.4 N / C

Q = 32 pC = 32 10⁻¹² C

         E₂ = 9 10⁹ 32 10⁻¹² / 0.2²

         E₂ = 7.2 N / C

let's find the difference between these two fields

         ΔE = E₂ -E₁

         ΔE = 7.2 - 5.4

         ΔE = 1.8 N / C

the minimum detection field is

         E_minimum = 0.77 N / C

        ΔE> E_minimo

We see that the field difference between these two flowers is greater than the minimum field, so the bee knows if it has been recently visited, so the answer is if it can detect the difference

8 0
3 years ago
Which of the Materials are insulators? (select all that apply)
DENIUS [597]
I believe all the insulators would be glass, wood, plastic, and yarn.

But I’m not entirely sure if mechanical pencil lead is an insulator or conductor.

Hope this helps.
3 0
3 years ago
A ball is dropped from a height h and falls the last half of its distance in 4 seconds. How long does the ball fall? From what h
dlinn [17]

Answer:

How long does the ball fall is t_2 =  13.66 (s).

From what height is the ball originally dropped is h=  913.90 (m).

Explanation:

8 0
3 years ago
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