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4 years ago

What is the average of 255, 242, 245?

Physics

2 answers:

AysviL [449]4 years ago

8 0

Answer:

The average is 247.33 if it is for the whole number then it is 247

Explanation:

I did it by adding it all together and dividing it by 3

Marrrta [24]4 years ago

5 0

Answer:

247.33 is the average.

Explanation:

To find the average of a set of numbers:

a. add them up.

b. divide by how many numbers there are.

SO:

a. 255 + 242 + 245 = 742.

b. 742 (total) divided by 3 (# of numbers) = 742/3 = 247.33.

Hope this helps!

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3 years ago

You are in charge of a cannon that exerts a force 11500 N on a cannon ball while the ball is in the barrel of the cannon. The le

IRISSAK [1]

Answer:

m = 7.48 kg

Explanation:

force (f) = 11,500 N

length of barrel (s) = 1.7 m

angle above the ground = 49.3 degrees

acceleration due to gravity (g) = 9.8 m/s^{2}

initial velocity (u) = 0 m/s

final velocity (v) = 72.3 m/s

mass (m) = ?

force = mass (m) x acceleration (a)

acceleration (a) = force / mass (m)

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5 0

3 years ago

You have a remote-controlled car that has been programmed to have velocity v⃗ =(−3ti^+2t2j^)m/s, where t is in s. At t = 0 s, th

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Answer:

The y-component of the car's position vector is 670m/s.

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Explanation:

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Integrating $\boldsymbol{v}$ we get the displacement vector $\boldsymbol{d}$ :

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then the displacement of the car at time $t$ is

$\boldsymbol{d(t)}= \boldsymbol{r+d}$

$\boxed{\boldsymbol{d(t)}=(-\dfrac{3}{2}t^2+3.0\boldsymbol{i}+\dfrac{2}{3}t^3+2.0\boldsymbol{j} )}$

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$\boxed{\boldsymbol{d(t)}=(-147\boldsymbol{i}+670\boldsymbol{j} )}m$

The y-component of the car's position vector is 670m/s.

The acceleration vector is the derivative of the velocity vector:

$\boldsymbol{a(t)}=\dfrac{d\boldsymbol{v(t)}}{dt} =(-3\boldsymbol{i}+4t\boldsymbol{j})$

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3 years ago

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Answer:

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Explanation:

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11Alexandr11 [23.1K]

Answer:

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Explanation:

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2 years ago