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matrenka [14]
3 years ago
5

Which type of motion did Aristotle associate the earth with

Physics
1 answer:
PtichkaEL [24]3 years ago
4 0

Answer: a circluar motion.

Explanation:

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Select the statements that describe a vector. Check all that apply.
DerKrebs [107]
By definition, vectors are quantities that have magnitude (positive or negative) and direction.
Graphically, they are illustrated by directed line segments, with arrows that indicate the direction.

Evaluate the given statements.
1. Vectors have a size only.  FALSE
2. Vectors have a size and a direction. TRUE
3. Vectors are indicated with arrows. TRUE
4. Vectors can have only positive values. FALSE
5. Vectors can have positive or negative values. TRUE

3 0
3 years ago
Read 2 more answers
Architects have to consider how sound travels when designing large buildings such as theaters, auditoriums, or museums. Sound in
serious [3.7K]

Answer:

  I₂ = 0.04 W / m²

Explanation:

Sound intensity is the power emitted between the unit area

          I = W / A

         W = I A

sound is a wave that travels in space whereby its energy is distributed on the surface of a sphere

         A = 4π r²

we substitute

         W = I (4π r²)

the emission power is constant, so the intensity at two different points is

           W = I₁ 4π r₁² = I₂ 4π r₂²

so the equation is

            I₁ r₁² = I₂ r₂²

In this case the units are not shown in the exercise, suppose that all units are in the SI system

           I₂ = I_1 \ \frac{r_1^2}{r_2^2}

let's calculate

           I₂ = 4 4 \  \frac{2^2}{20^2}

           I₂ = 0.04 W / m²

5 0
3 years ago
For a freely falling object dropped from rest, what is the acceleration at the end of the fifth second of fall?
stepan [7]
Near the Earth's surface, a freely falling body has constant acceleration at every instant of its fall ... 9.8 meters per second^2.
3 0
3 years ago
Which of the following statements is/are true? Check all that apply. Check all that apply. The total mechanical energy of a syst
Taya2010 [7]

Answer:

1) True, 2) True, 3) False, 4) False, 5) False

Explanation:

1) True. Dissipative energy cannot be recovered, in general it is a form of heat

2) True. The dissipation can be by radiation, heat

3) False. Mechanical energy is divided into K and U but not in equal parts

4) False. When there are dissipative interactions, part of the mechanical energy is set in the form of heat, so its value decreases

5) False. Mechanical energy is the sum of those two energies

8 0
3 years ago
Please help! Question is attached.​
il63 [147K]

Answer:

a. 6

b. 6 m/s²

c. 300 m to the right

d. 30 secs

Explanation:

slope = rise /run

60-0/10-0

= 6

b. slope = acceleration = 6 m/s²

c. d=ut+1/2at²

t=10 (segment A last for 10 secs)

u - initial velocity = 0

so d = 0(10)+1/2*6*10²

=300 m

6 0
3 years ago
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