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EleoNora [17]
3 years ago
7

Do humans impact Earth's climate?

Physics
2 answers:
vodka [1.7K]3 years ago
8 0
Human<span> activities contribute to </span>climate<span> change by causing changes in </span>Earth's <span>atmosphere in the amounts of greenhouse gases, aerosols (small particles), and cloudiness.</span>
Svetach [21]3 years ago
3 0
Yes we do by driving cars and cutting down trees. This effects the Earth's climate.

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Find the position vector of a particle that has the given acceleration and the specified initial velocity and position. a(t) = 1
kondor19780726 [428]

Answer:

Explanation:

Given

Acceleration a(t)=14t\hat{i]+\sin (t)\hat{j}+\cos (2t)\hat{k}[/tex]

and v(0)=\hat{i}

r(0)=\hat{j}

we know a=\frac{\mathrm{d} v}{\mathrm{d} t}

\int dv=\int adt

v(t)=\int (14t\hat{i}+\sin (t)\hat{j}+\cos (2t)\hat{k})dt

v(t)=7t^2\hat{i}-\cos t\hat{j}+\frac{\sin (2t)\hat{k}}{2}+c

at t=0

v(0)=0-1\cdot \hat{j}+0+c

c=\hat{i}+\hat{j}

v(t)=(7t^2+1)\hat{i}+(1-\cos t)\hat{j}+\frac{\sin (2t)\hat{k}}{2}

and \frac{\mathrm{d} r}{\mathrm{d} t}=v(t)

\int dr=\int vdt

r(t)=\int ((7t^2+1)\hat{i}+(1-\cos t)\hat{j}+\frac{\sin (2t)\hat{k}}{2})dt

r(t)=(\frac{7}{2}t^3+t)\hat{i}+(t-\sin (t))\hat{j}+\frac{1}{2}\times (-\frac{1}{2}\cos 2t)\hat{k}+c_2

at t=0

r(0)=\hat{j}

r(t)=(\frac{7}{3}t^3+t)\hat{i}+(1+t-\sin t)\hat{j}+\frac{1}{4}(1-\cos 2t)\hat{k}

       

4 0
3 years ago
Draw a circuit that uses the resistors listed below as well as a 12V battery source. For your circuit, determine (a) the total r
Zepler [3.9K]

Answer: hello your questions lacks the required resistor values therefore i will provide a general answer using an example

answer : a) 14 ohms  b) 0.86 amps   c) 10.32 V

Explanation:

Assuming the resistors are : 3 ohms , 4 ohms and 5 ohms

Voltage source = 12V

<u>Assuming that the Resistors are in series </u>

<u>a) Determine Total resistance </u>

Req = R1 + R2 + R3

       = 3 + 4 + 5 = 14 ohms

<u>b) Total current </u>

Ieq = V / Req

      = 12 / 14 =  0.86 amps

<u>c) The Total Voltage over the entire system </u>

Vt = ∑ Voltage drops

    = ( 0.86 * 3 ) + ( 0.86 * 4 ) + ( 0.86 * 5 )

    = 10.32 V

5 0
3 years ago
A net force, the magnitude of which is 2800 n, accelerates a 1250-kg vehicle for 8.0 s. the vehicle travels 80.0 m during
ASHA 777 [7]

The power output is, 2800 watt. Power is defined as the rate of the work done.

<h3>What is force?</h3>

Force is defined as the push or pull applied to the body. Sometimes it is used to change the shape, size, and direction of the body. Force is defined as the product of mass and acceleration. Its unit is Newton.

The power output is found as;

\rm P = \frac{W}{t} \\\\ P= \frac{F \times d }{t} \\\\ P= \frac{2800 \ N \times 80.0\ m}{8.0 \ sec} \\\\ P=2800 \  Watt

Hence,the power output is, 2800 watt.

To learn more about the force, refer to the link;

brainly.com/question/26115859

#SPJ1

5 0
3 years ago
Which statement BEST describes the relationship between our Solar System and the Milky Way galaxy?
Varvara68 [4.7K]

Answer:

D)Our Solar System is located in the outer area of one of the spiral arms of the Milky Way galaxy.

Explanation:

Our solar system is one of millions of solar systems found in our galaxy, the Milky Way.

Hope that helps!

Have a great day! :D

6 0
3 years ago
Read 2 more answers
Find the initial velocity
Alla [95]

Answer:

A car accelerates uniformly from 5m/s to 10m/s in 5s ...

A car starts from rest and picks up a velocity of 20 m/s ...

A car accelerates uniformly from 10m/s to 20m/s in 5 ...

How much work is required to accelerate a 1000 kg car ...

More results from<u> www.quora.com</u>

Explanation:

4 0
3 years ago
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