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denpristay [2]
3 years ago
10

Short Answer

Physics
1 answer:
STatiana [176]3 years ago
4 0

15 degrees because a glass of water won't do anything to a bath tub of 15 degree water

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An engineer is building a new water dam. She needs the turbine to spin at least 100,00 j of kinetic energy. If the reservoir hol
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Answer:

The water must flow with the velocity of 141.4m/s

Explanation:

The kinetic energy is energy due to the motion of a body

In this Case the kinetic energy of the turbine is given as

KE=1/2mv²

Where KE= kinetic energy

m= mass of water

v= velocity of the water

Data given

KE=10000j

m=1000g------kg =1000/1000= 1kg

v=?

Substituting our data into the expression we have

10,000=1/2(1*v²)

10,000=v²/2

Solving for v we have

v²=20,000

v=√20,000

v=141.4m/s

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3 years ago
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How does the radius of a string affect centripetal force.
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Answer:

because a raduis is half of 25% of a cicrle.

Explanation:

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A 300 g ball swings in a vertical circle at the end of a 1.3-m-long string. When the ball is at the bottom of the circle, the te
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Answer:

0.23N for the speed

at the bottom of the circle

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Charges can be separated in an isolated system
Vesnalui [34]

Answer:

yes. can always be separated

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A physicist comes across an open container which is filled with two liquids. Since the two liquids have different density, there
Dominik [7]

Answer:

496.57492 kg/m³

Explanation:

P_a = Atmospheric pressure = 101300 Pa

\rho_w = Density of water = 1000 kg/m^3

h_w = Height of water = 21.8 cm

h_f = Height of fluid = 30 cm

g = Acceleration due to gravity = 9.81 m/s²

\rho_f = Density of the unknown fluid

Absolute pressure at the bottom

P_{abs}=P_a+\rho_wgh_w+\rho_fgh_f\\\Rightarrow \rho_f=\frac{P_{abs}-P_a-\rho_wgh_w}{gh_f}\\\Rightarrow \rho_f=\frac{104900-101300-1000\times 9.81\times 0.218}{9.81\times 0.3}\\\Rightarrow \rho_f=496.57492\ kg/m^3

The density of the unknown fluid is 496.57492 kg/m³

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3 years ago
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