Which Example uses collaboration to gain further knowledge?

Which is not an extracurricular activity?

Degger [83]

Answer:

The answer is C

explanation: hope this helps

7 0

2 years ago

If 3x-y=12 what is the value of 8^x over 2^y

Maslowich

4 0

4 years ago

Should you generate electricity with our own personal wind turbine? That depends on whether you have enough wind on your site. T

aksik [14]

To solve this problem, first we have to determine the z statistic. The formula is

$z= \frac{x-mean}{s \sqrt{n} }$

where x is the test point which is 8.019, the mean is 8 mph, s is the standard deviation which is 3.813 and n is the number of data which is 1114. Then,

$z= \frac{8.019-8}{ \frac{3.813}{ \sqrt{1114}} }= 0.17$

Next, we find the p-value for the particular z. p-value is used in hypothetical test. Using a wind turbine would be the null hypothesis. From the standard normal table found in any statistics book, the p-value for z<0.17 is 0.5675. If the p-value is greater than 0.05, then you do not reject the null hypothesis.

Therefore, the landowner could use a small turbine at the site.

3 0

3 years ago

A rod is laid out along the x-axis with one end at the origin and the other end at x = l. the linear density is given by the fol

leonid [27]

The center of mass of the rod of length L whose mass density changes from one end to the other quadratically is; X_cm = ³/₄L(ρ₀ + ρ₀)/(2ρ₀ + ρ₁)

<h3>What is the center of mass?</h3>

The formula for the center of mass of a body is defined as;

X_cm = (1/M) ∫r.dm

Where;

X_cm is the position of the center of mass

M is the total mass of the body

r is the position with respect to an origin

The density of a body is the relationship between two of its magnitudes that change constantly and so we have;

ρ = m/x

Applying small changes and we have;

ρ = dm / dx

dm = ρ*dx

We are given the expression;

ρ₀ = ρ₀ + (ρ₁ -ρ₀) (x/L)²

Thus;

dm = (ρ₀ + (ρ₁ -ρ₀) (x/L)²)dx

Since the whole system is on the x-axis, we integrate from the initial point x = 0 to the upper limit X = L. This gives;

X_cm = M⁻¹ ∫ x [ρ₀ + ( ρ₁-ρ₀) (x/L)²] dx

X_cm = M⁻¹ [∫ ρ₀ x dx + I (ρ₁-ρ₀) / L² x³ dx]

X_cm = M⁻¹ [ρ₀ x²/ + (ρ₁ -ρ₀) / L² x⁴/4]

X_cm = M⁻¹ [ρ₀/2 (L2-0) + (ρ₀₁ -ρ₀) /4L² (L⁴-0)

X_cm = M⁻¹ [ρ₀ L²/2 + (ρ₁ -ρ₀)/4 L²]

X_cm = M⁻¹ L² [ρ₀/4 + ρ₁/4]

X_cm = M⁻¹ L²/4 ( ρ₀ +ρ₁)

The only parameter that we don't know explicitly is the total mass, but we can look for their relationship using the concept of density.

M = ∫dm = ∫ρ.dx

M = ∫[ρ₀ + (ρ₁ -ρ₀)/L²x²] dx

We integrate between the limits of integration x = 0 and x = L to get;

M = ρ₀ x + (ρ₁ -ρ₀)/L² *x³/3

M = ρ₀ L + (ρ₁ -ρ₀)/3L² L³

M = ρ₀ L + (ρ₁-ρ₀)/3 L

M = L(ρ₀ + ρ₁/3 -ρ₀/3)

M = L(2/3 ρ₀ + ρ₁/3)

M = ¹/₃L(2ρ₀ + ρ₁)

We will replace and simplify in the center of mass equation to get;

X_cm = ¹/₄L²[ρ₀ + ρ₁] / [L/3 (2ρ₀ + ρ₀)/L]

X_cm = ³/₄L(ρ₀ + ρ₀)/(2ρ₀ + ρ₁)

Read more about Center of Mass at; brainly.com/question/13650080

6 0

2 years ago

According to the graph, approximately how much of the us population used the internet in 2006? less than 20% about 40% about 70%

Alona [7]

Answer:70%

Explanation:

C

3 0

3 years ago