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nirvana33 [79]
3 years ago
10

A motor does 1000J of work in 18 seconds. What is the power of the motor?

Physics
1 answer:
solong [7]3 years ago
7 0

Answer:

55.56 watt

Explanation:

Work (W) = 1000 J

time (T) = 18 sec

power (P) = ?

We know power is the rate of doing work so

p = w / t

= 1000 / 18

= 55. 56 watt

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Consider the elementary gas-phase reversible reaction A 3C Pure A enters at a temperature of 400 K and a pressure of 10 atm. At
xxMikexx [17]

Answer:

  • 39%

Explanation:

The equilibrium equation is:

          A\rightleftharpoons 3C

The initial concentration of A can be calculated from the ideal gas equation:

                 pV=nRT\\\\n/v=p/(RT)\\\\C_A=\dfrac{10atm}{0.08206(atm-dm^3/K-mol)/times 400K}\\\\C_A=0.304mol/liter

Determine the conversion of substance A to substance C using an ICE table and the Kc constant:

             A               ⇄          3C

I            0.304                        0

C             - x                          + 3x

E          0.304 - x                   3x

         K_c=0.25=\dfrac{(3x)^3}{(0.304-x)}

Solve for x:

You need to use a graphing calculator:

  • 108x³ = 0.304 - x
  • 108x³ + x - 0.304 = 0
  • x ≈ 0.1195 mol/liter

Then:

           C_A=0.304mol/liter-0.1195mol/liter=0.1845mol/liter\\\\C_C=3\times 0.304mol/liter=0.912mol/liter

The equilbrium conversion is:

           \% = [0.304mol/liter-0.1845mol/liter]/(0.304mol/liter)\times 100

           \% \approx 39\%

3 0
3 years ago
12 POINTS PLUS MARKF BRAINILEST
Usimov [2.4K]

Answer:

gas

Explanation:

7 0
4 years ago
Read 2 more answers
What type of muscle make up the heart and why do you think this so
aleksklad [387]
I think cardiac muscle would make up the heart because it’s able to pump blood through the heart and the rest of the body.
6 0
3 years ago
Read 2 more answers
Direct current is the flow of an electric charge?
RUDIKE [14]
Direct current is the unidirectional flow of an electric charge.

The term 'unidirectional' in the statement means that direct current only moves in one direction. Direct current usually produced by things such as batteries, dynamos, and power supplies

hope this helps <span />
3 0
4 years ago
A ball of 0.5kg slows down from 5m/s to 3m/s. Calculate the work done in the process
ivann1987 [24]
Answer: Cannot determine cause we need to know the change of time to calculate the work.

Explanation:

m = 0.5kg

V = 3m/s - 5m/s = -2m/s

P = W/t = Fv

F = ma

W = Fvt

W = (0.5)(9.8)t = 4.9t



4 0
2 years ago
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