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2 years ago

A metal box, attached to a small parachute, is dropped from a helicopter. explain in terms of the forces acting; why:

Physics

2 answers:

faust18 [17]2 years ago

6 0

Answer:

Explanation:

Anna35 [415]2 years ago

3 0

(i) because there's gravity force pulling it downwards.

(ii) because the force on the metal box is gone (either it has landed on the ground or something else happened) that means that the metal box is no longer moving but it has constant velocity/uniform velocity.

I'm sorry if it's wrong but that's how I see it

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A car has a kinetic energy of 103kJ.

sergij07 [2.7K]

Answer: 1200kg

Explanation:

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2 years ago

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Korolek [52]

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https://blogs.bu.edu/ggarber/interlace/pendulum/energy-in-a-pendulum/

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3 years ago

A solar panel measures 0.57 m by 1.3 m. In direct sunlight, the panel delivers 6.6 A at 6 V. If the intensity of sunlight is 300

zheka24 [161]

Answer:

efficiency of solar panel is 18%

Explanation:

Energy received by the sunlight is given as

$Power = intensity \times area$

here we know the dimensions of the plate as

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now we have

$Area = (0.57)(1.3) m^2$

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$P_1 = 0.741(300) = 222.3 W$

now the output power due to solar panel is given as

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$P_{out} = (6.6 A)(6 V)$

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now the efficiency is given as

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$\eta = \frac{39.6}{222.3}$

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3 years ago

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aev [14]

Answer:

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I = mr²

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