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alina1380 [7]
3 years ago
9

An artillery shell is fired at an angle of 26.3 ⦠above the horizontal ground with an initial speed of 1770 m/s. the accelerati

on of gravity is 9.8 m/s 2 . find the total time of flight of the shell, neglecting air resistance. answer in units of min.
Physics
1 answer:
SIZIF [17.4K]3 years ago
3 0
T = 2*V₀*sin (α) / g
t = 2*1770*sin (26.3°) / 9.8 ≈ 2*1770*0.443 / 9.8 ≈ 160 s    or 2.7 min

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iren2701 [21]

Answer:

A radio telescope helped the astronomers discover the CMB.

Explanation:

  • Penzias and Wilson while experimenting with a radio telescope in 1964, accidentally discovered the radiation that exists universally also known as the CMB.
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3 0
3 years ago
If the AMA of the inclined plane below is 2, calculate the IMA and efficiency. IMA = Efficiency =
wlad13 [49]

Answer:

IMA = 2.5 metres

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The AMA of a machine is referred to as the Actual Mechanical Advantage of a machine, calculated as the ratio of the output to the input force.

The Ideal Mechanical Advantage is the ratio of the input distance to the output distance.

From the diagram, the input distance which is also the distance moved by effort  = 5metres

The load distance (output distance) = 2 metres

IMA = INPUT DISTANCE / OUTPUT DISTANCE

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AMA = 2, IMA = 2.5

EFFICIENCY = AMA / IMA

EFFICIENCY = (2 / 2.5) × 100%= 0.8 × 100%

EFFICIENCY = 80%

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2 years ago
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ycow [4]
1.) appearance
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8 0
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sasho [114]
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A

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