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3 years ago

X+6 for X=7 P/5 for p=30 2x+y for x=5, y=4 Please Evaluate these.

Mathematics

1 answer:

AnnyKZ [126]3 years ago

5 0

Answer:

Step-by-step explanation:

x+6=7+6=13

p/5=30/5=6

2x+y=2(5)+4=10+4=14

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An aquarium 2 m long, 1 m wide, and 1 m deep is full of water. Find the work (in J) needed to pump half of the water out of the

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Answer:

$W=2452.5 J$

Step-by-step explanation:

The work is define as the integral of the force times distance. So we have:

$W=\int^{a}_{b}Fxdx$

Now, we can write the force in terms of density.

$F=m*g=\rho Vg$

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So the work will be:

$W=\int^{0.5}_{0} 2*1000*9.81*xdx=\int^{0.5}_{0} 2*1000*9.81*xdx=\int^{0.5}_{0}19620xdx=19620(\frac{x^{2}}{2})|^{0.5}_{0}$

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I hope it helps you!

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