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2 years ago

5

You walk 2/15 miles for your chemistry class to Your economics class at a constant speed of 0.8 miles per hour.How long did this

take you?

1 answer:

Zolol [24]2 years ago

7 0

<span>speed = 2.5 miles per hour</span>

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Consider a particle that moves through the force field F(x, y) = (y − x)i + xyj from the point (0, 0) to the point (0, 1) along

sleet_krkn [62]

The work done by $\vec F$ is

$\displaystyle\int_C\vec F\cdot\mathrm d\vec r$

where $C$ is the given curve and $\vec r(t)$ is the given parameterization of $C$ . We have

$\mathrm d\vec r=\dfrac{\mathrm d\vec r}{\mathrm dt}\mathrm dt=k(1-2t)\,\vec\imath+\vec\jmath$

Then the work done by $\vec F$ is

$\displaystyle\int_0^1((t-kt(1-t))\,\vec\imath+kt^2(1-t)\,\vec\jmath)\cdot(k(1-2t)\,\vec\imath+\vec\jmath)\,\mathrm dt$

$=\displaystyle\int_0^1((k-k^2)t-(k-3k^2)t^2-(k+2k^2)t^3)\,\mathrm dt=-\frac k{12}$

In order for the work to be 1, we need to have $\boxed{k=-12}$ .

3 0

3 years ago

What is the density of an object haveing a mass of 5.0g and a volume of 45.0 cm3

JulijaS [17]

<span>Using the formula d=m/v, we first need to convert 5.0 and 45.0 to their SI unit equivilents. 5.0g is 0.005kg, 45.0cm^3 becomes 0.000045m^3.Therefore, the density of your cube is 0.005/0.000045=111.11 kg/m^3(5 s.f)</span>

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2 years ago

Read 2 more answers

If f(x)=6x-9, find f(4)

kipiarov [429]

Answer:

13

Step-by-step explanation:

In order to find the answer, plug in 4 for x.

$f(x)=6x-9\\f(4)=6(4)-9\\f(4)=24-9\\f(4)=13$

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2 years ago

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Liam's baking plans changed. He

julsineya [31]

Answer:

(33 - 5)/7 = 4

Step-by-step explanation:

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3 years ago

HURRY! Match each function with the correct inverse of the function. BEST & FASTEST ANSWER GETS BRAINIEST ANSWER!!!!!!!!!

sertanlavr [38]

2 1 3 6 5 hope I helped

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3 years ago