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BigorU [14]
3 years ago
5

Hi!! Does anyone know this answer? :D

Physics
2 answers:
Agata [3.3K]3 years ago
8 0

Answer:

c seems to be the only reasonable answer

kondor19780726 [428]3 years ago
8 0

Answer:

Im not fully corrrect but I would say C

Explanation:

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aleksklad [387]
Message me back and I can help you.
5 0
4 years ago
What mass of a material with density ρ is required to make a hollow spherical shell having inner radius r1 and outer radius r2?
krok68 [10]

Answer: m=\frac {\rho}{\frac{4}{3} \pi( (r_2)^{3} - (r_1)^{3}) }

It is given that:

Density of material =ρ

radius of inner spherical shell = r_1

radius of outer spherical shell=r_2

we know that the volume of sphere is \frac{4}{3}\pi r^{3}

Volume of the given spherical shell = \frac{4}{3}\pi( (r_2)^{3}-(r_1)^{3})

Then mass of the spherical shell can be calculate as:

Mass, m=density/ volume

m=\frac {\rho}{\frac{4}{3} \pi ((r_2)^{3} - (r_1)^{3}) }


6 0
3 years ago
¿Piensas que algunos fenómenos meteorológicos pueden deberse a las relaciones que existen entre las variables de presión, volume
lakkis [162]

Sí, porque tanto las leyes de Gauss, boyle, etc, relacionan estos comportamientos con el comportamiento de los gases, los cuales son los que ocasionan los diferentes fenómenos naturales y meteorológicos.

5 0
3 years ago
It’s estimated that there are a trillion comets in the Oort cloud, which extends out to about 50,000 AU.How much space does each
dexar [7]

Answer:

  1. Each comet has 523 UA³
  2. The typical spacing would be 8.05 UA
  3. 2.0181x10^21 Joules

Explanation:

  1. Assuming comets are evenly distributed we can find first the volume of a sphere with the formula frac{{4}{3}}πr³ using 50000 as the radius, and then dividing this volume by the amount of comets. This gives a the space each comet has on average.
  2. We apply the cube root as proposed in the question.
  3. The kinectic energy is given <em>K=frac{{1}{2}}mv² where m is the mass and v is the velocity. Apropriate unit are given in the question.</em>

5 0
4 years ago
Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and they walk away in different direc
Lapatulllka [165]

Answer:

a)     d = 30.79 m , b) θ = -22.4° ,   θ = 22.4 South of East

Explanation:

The easiest way to solve problems with vectors is to use their components, for this the East-West direction coincides with the x-axis and the North-South direction coincides with the y-axis

Let's use the index for / Ricardo and the index for Jane, let's break down the displacements

Richard

X axis

      x₁ = 26.0 sin (60)

      x₁ = -22.52 m

Y Axis  

     y₁ = 26.0 cos 60

     y₁ = 13 m / s

Jane

X axis

       x₂ = 16.0 cos (180 +30)

       x₂ = -13.85 m

Y Axis  

        y₂ = 16.0 sin (180 + 30)

        y₂ = - 8.0 m

Now we can use Pythagoras' theorem to find the distance between them

         d = √ [(x₂ -x₁)² + (y₂ -y₁)²]

         d = √ [(-13.85 + 22.52)² + (-8 -13)²]

         d = 30.79 m

Let's use trigonometry to enter the address

         tan θ = Δy / Δx

         θ = tan⁻¹ Δy / Δx

         θ = tan⁻¹ (-13.85 + 22.52) / (-8 - 13)

         θ = tan⁻¹ (-8.67 / 21)

         θ = -22.4°

The negative sign indicates that the angle is measured from the axis clockwise.

In the form of cardinal s point is

     θ = 22.4 South of East

4 0
4 years ago
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