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r-ruslan [8.4K]
3 years ago
15

An oil tank has a base of area 2.5 m2 and is filled with oil to a depth of 1.2 m. The density of the

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

Answer:

D. F = 24000[N]

Explanation:

To be able to calculate the force we must first find the pressure at the bottom of the tank. By means of the following equation:

P=Ro*g*h

where:

Ro = density of the liquid = 800 [kg/m³]

g = gravity acceleration = 9.81 [m/s²]

h = elevation = 1.2 [m]

P=800*9.81*1.2\\P=9417.6[Pa]

Pressure is defined as the relationship between Force on the area.

P=F/A\\F=9417.6*2.5\\F = 23544 [N] = 24000[N]

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Question: A 2.0 kg sphere with a velocity of 6.0 m/s collides head-on and elastically with a stationary 10 kg sphere, What is thier velocities after collision.

Answer:

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Explanation:

From the question,

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Given:  m = 2 kg, m' = 10 kg, u = 6 m/s, u' = 0 m/s

Substitute into equation 1 and 2

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2v+10v' = 12.............. Equation 3

6-0 = v-v'

v-v' = 6 ................... Equation 4

Solve equation 3 and 4 simultaneously.

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Substitute equation 5 into equation 3

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12+2v'+10v' = 12

12v' = 12-12

v' = 0/12

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Also substitute the value of v' into equation 5

v = 6+0

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