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Pani-rosa [81]
3 years ago
6

Anuja is holding a stuffed dog, with a mass of 0.30 kg, when Derek decides that he wants it and tries to pull it away from Abuja

. If Derek pulls horizontally on the dog with a force of 10.0 N and Anudja pulls with a horizontal force of 11.0 N, what is the horizontal acceleration of the dog?
Physics
1 answer:
igor_vitrenko [27]3 years ago
8 0

Answer:

a = 3.33 m/s²

Explanation:

The horizontal acceleration of the dog can be found by using Newton's Second Law of Motion as follows:

F = ma

where,

F = Unbalanced force applied on the dog = 11 N - 10 N = 1 N

m = mass of the dog = 0.3 kg

a = horizontal acceleration of dog = ?

Therefore,

1 N = 0.3 kg(a)

a = 1 N/0.3 kg

<u>a = 3.33 m/s²</u>

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calculate the diameter of a silver wire of length 75cm , which is extended by 1.85mm when a 10kg mass is suspended from it's end
sdas [7]

Answer:0.8\ mm

Explanation:

Given

length of wire l=75\ cm

change in length \Delta l=1.85\ mm

mass of wire m=10\ kg

Young's modulus for silver E=7.9\times 10^{10}\ N/m^2

load on wire F=mg

F=10\times 9.8=98\ kg

change in length is given by

\Delta l=\dfrac{Pl}{AE}

Where A=area of cross-section

A=\dfrac{Pl}{\Delta lE}

A=\dfrac{98\times 0.75}{1.85\times 10^{-3}\times 7.9\times 10^{10}}

A=\dfrac{73.5}{14.615\times 10^{7}}

A=5.029\times 10^{-7}\ m^2

also wire is the shape of cylinder so cross-section is given by

A=\dfrac{\pi d^2}{4}=5.029\times 10^{-7}\ m^2

\Rightarrow d^2=\dfrac{5.029\times 10^{-7}\times 4}{\pi }

\Rightarrow d^2=64.02\times 10^{-8}

\Rightarrow d=8\times 10^{-4}\ m

\Rightarrow d=0.8\ mm

4 0
3 years ago
In which direction does energy flow in an ecosystem
muminat

QUESTION -

  In which direction does energy flow in an ecosystem ?


ANSWER -

  The flow of energy in an ecosystem is best described as energy moving in one direction from the sun to the producers then to the consumers. Explanation; Energy flow is the amount of energy that moves through successive trophic levels of a food chain in an ecosystem

4 0
3 years ago
Read 2 more answers
Convert 2kg into SI unit of force​
Doss [256]

Answer:

19.6133 newton.

...?.......

3 0
2 years ago
a small object with a charge of magnitude q creates an electric field. at a point 1.0 m to the north of the charge the field has
Sunny_sXe [5.5K]

We have that for the Question,it can be said that the field has a <u>value </u>of

  • E_B=12N/C due west

From the question we are told

a small object with a charge of magnitude q creates an electric field. at a point 1.0 m to the north of the charge the field has a value of 2.0 n/c directed south. at a <em>point </em>0.5 m to the west of the <em>charge </em>the field has a value of

<h3> Electric field </h3>

Generally the equation for the <em>electric</em> field   is mathematically given as

E=\frac{q}{4\piE_0r^2}

Therefore

if E_A=3N/C\\\\E_B=\frac{3}{0.25}\\\\\frac{q}{4\piE_0}=3N/C\\\\

  • E_B=12N/C due west

For more information on Electric field visit

brainly.com/question/12757739

8 0
2 years ago
How does the thickness of paint sprayed on a surface change when the sprayer is held twice as far away?
Gre4nikov [31]

Answer:

Explained

Explanation:

It depends upon the spray pattern, but if it is an angular fan and the speed of the painter remains the same, then it will be half of the thickness. A round pattern will end up with approximate one third coverage.

7 0
3 years ago
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