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jok3333 [9.3K]
2 years ago
12

6) A boat crosses a river at a constant engine speed of 2.0 m/s under pointed Directly west. The river runs directly south at 2.

5 m/s. If the river is 126 meters wide, how long does it take the boat to cross the river?
7) If the pilot of the boat doesn't correct for the current, how far downstream will he land on the opposite shore?
Physics
1 answer:
TEA [102]2 years ago
8 0

Answer:ligma ;)

Explanation:

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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
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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

L = 0.57 m

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now we have

Area = (0.57)(1.3) m^2

A = 0.741 m^2

now the power received by the sun light is given as

P_1 = 0.741(300) = 222.3 W

now the output power due to solar panel is given as

P_{out} = V i

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

P_{out} = 39.6 Watt

now the efficiency is given as

\eta = \frac{P_{out}}{P_{in}}

\eta = \frac{39.6}{222.3}

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3 years ago
Bianca sends her brother Phineas an e-mail to invite him to dinner. In this scenario, what is the channel according to Shannon's
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The channel is whatever was used to carry information from
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A thin walled spherical shell is rolling on a surface. What
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Answer:

=\frac{1/3}{5/6} = 0.4

Explanation:

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M represent sphere mass

R -sphere radius

we know linear speed is given as v = r\omega

translational K.E = \frac{1}{2} mv^2 = \frac{1}{2} m(r\omega)^2

rotational K.E = \frac{1}{2} I \omega^2 = \frac{1}{2} \frac{2}{3} MR^2 \omega^2

total kinetic energy will be

K.E = \frac{1}{2} m(r\omega)^2 + \frac{1}{2} \frac{2}{3} MR^2 \omega^2

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fraction of rotaional to total K.E

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