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wlad13 [49]
4 years ago
15

When an atom absorbs energy, the electrons move from their _______ to an exited state?

Physics
1 answer:
spayn [35]4 years ago
4 0
When an atom absorbs energy, the electrons move from their -ground state- to an excited state?
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Water is pouring into a conical tank at the rate of 8 cubic feet per minute. If the height of the tank is 10 feet and the radius
iren [92.7K]

Answer:

\frac{25}{8\pi}ft/min

Explanation:

We are given that

\frac{dV}{dt}=8 ft^3/min

Height of tank=h=10 ft

Radius of tank, r=4 feet

We have to find the dh/dt when the water is 4 feet deep.

\frac{r}{h}=\frac{4}{10}=\frac{2}{5}

r=\frac{2}{5}h

Volume of cone , V=\frac{1}{3}\pi r^2 h

Substitute the values

Volume of cone , V=\frac{1}{3}\pi(\frac{2}{5}h)^2h=\frac{4}{75}\pi h^3

Differentiate w.r.t t

\frac{dV}{dt}=\frac{12}{75}\pi\times h^2\times \frac{dh}{dt}

Substitute the values

8=\frac{12}{75}\times\pi (4)^2\times \frac{dh}{dt}

\frac{dh}{dt}=\frac{8\times 75}{12\times 16\pi}=\frac{25}{8\pi}ft/min

3 0
4 years ago
How far did an airplane go if it traveled at 700 mph for 3.5 hours?
Scrat [10]
2,450 miles. you have to do 700•3.5= 2,450
6 0
3 years ago
Read 2 more answers
The car transports 180 m in 12 s. Calculate its speed and express it in m / s and in km / h
makkiz [27]

Explanation:

Given parameters:

Distance  = 180m

Time  = 12s

Unknown:

Speed  in m/s and km/hr

Solution:

Speed is the distance divided by the time taken,

   Speed  = \frac{distance}{time}  

So;

     Speed  = \frac{180}{12}   = 15m/s

   1000m = 1km

  3600s  = 1hr

Therefore;

   15 x m x \frac{1}{s}  x \frac{1km}{1000m} x \frac{3600s}{1hr}    = 54km/hr

5 0
3 years ago
Plants take up carbon dioxide from the air and nutrients from the soil. This is an example of interactions between the
Aneli [31]
<span>The answer would be: b. biosphere, atmosphere, and geosphere

The biosphere is made by the ecological system so the plants should be biosphere. The carbon dioxide is taken by the plant from the air which was the atmosphere. The nutrient is taken by the plant from the soil which is the geosphere.</span>
3 0
4 years ago
Which of the following was NOT a department in Washington's first cabinet?
Bingel [31]

Answer:

I believe its C: Secretary of War. I hope this helped :)

Explanation:

6 0
3 years ago
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