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Zina [86]
3 years ago
5

Suppose that you release a small ball from rest at a depth of 0.700 m below the surface in a pool of water. If the density of th

e ball is 0.200 that of water and if the drag force on the ball from the water is negligible, how high above the water surface will the ball shoot as it emerges from the water? (Neglect any transfer of energy to the splashing and waves produced by the emerging ball.)
Number________
Units ________
Physics
1 answer:
Maru [420]3 years ago
4 0

Answer:

photo

Explanation:

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An airplane is flying through the air at a speed of 150 mph at a heading of 60 degrees. if the wind is blowing at 20 mph from th
Crazy boy [7]

Answer:

Explanation:

Given

speed of plane 150 mph

heading 60^{\circ}

wind is blowing at 20 mph from south-east

velocity of plane w.r.t. wind

v_{pw}=150(\cos 60\hat{i}+\sin 60\hat{j})

v_{w}=20(\cos 45\hat{i}-\sin 45\hat{j})

v_{p}=v_{pw}+v_{w}

v_{p}=(150\cos 60+20\cos 45)\hat{i}+(150\sin 60-20\sin 45 )\hat{j}

v_{p}=89.14\hat{i}+115.76\hat{j}

|v_{p}|=146.103 m/s

(b)after 30 minutes

Plane traveled in  x direction =89.14\times 0.5=44.57 miles

Plane in Y direction =115.76\times 0.5=57.88 miles

Total distance=\sqrt{x^2+y^2}=73.05 miles

direction tan\theta =\frac{115.76}{89.14}=1.298

\theta =52.38^{\circ} w.r.t east

4 0
3 years ago
A beam of light is emitted 8.6 cm beneath the surface of a liquid and strikes the air surface 7.2 cm from the point directly abo
Makovka662 [10]

Answer:

n = 1.56

Explanation:

The total reflection attempts occurs when a light beam passes from a medium with a higher index to a medium with a lower nest, at an angle where it occurs we can find them by the refractive relationship

             n₁ sin θ₁ = n₂ sin θ₂

             n1 = n2 / sin θ₁

For this relationship to be fulfilled, the liquid index must be greater than the air index divided by the sine of the critical angle

Let's use trigonometry to find angle

               tan θ = y / x

                θ = tan⁻¹ 7.2 / 8.6

                θ = 39.94º

         

                n₁ = 1 / sin 39.94

                n = 1.56

This is the refractive index of the liquid

4 0
3 years ago
What element from the periodic table produces blue color in fireworks
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4 years ago
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Two technicians are discussing the testing of a catalytic converter. Technician A says that a vacuum gauge can be used and obser
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Answer:

Answer is C. Both technicians A and B.

Refer below.

Explanation:

Two technicians are discussing the testing of a catalytic converter. Technician A says that a vacuum gauge can be used and observed to see if the vacuum drops with the engine at 2500 RPM for 30 seconds. Technician B says that a pressure gauge can be used to check for backpressure. The following technician is correct:

Both technicians A and B

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