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lana [24]
2 years ago
5

Are you ready for a brain twister? murphy can row at 5 kmph in still water. if the velocity of current is 1 kmph and it takes hi

m 1 hour to row to a place and come back, how far is the place?
Physics
1 answer:
ipn [44]2 years ago
7 0
Answer: 2.4km

In this case, Murphy is <span>rowing to a place and come back so he was going 2x of the place distance. That means when he goes to the place the current velocity is helping him(5+1 kmph) and when he comes back the current velocity is slowing him(5-1kmph).
To calculate the place distance, the calculation would be:
X/6kmph + X/4kmph= 1 hour
</span>X/6kmph + 1.5X/6kmph= 1 hour
<span>2.5X/6kmph= 1hour
2.5X= 1 hour x 6km/ hour
X= 6km/2.5
X= 2.4km
</span>
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Explanation:

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Balance the equation <br> CuCl2 + H2S → CuS + HCl
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use the pendulum equation to calcuate the period of a 1.50 pendulum. Remeber that the vaule of "g" is 9.81 m/s² please help ​
kati45 [8]

Answer:

L = 3.51

Explanation:

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square both sides to get 2.25 = 2\pi ( L/9.81)

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A spherical hot air balloon of diameter 30.0 meters just floats (hovers) when the hot air inside has been heated to a density of
Rom4ik [11]

Answer:

W = 166422.729 N

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weight of the balloon and cargo = ?

density of the surrounding air = 1.20 kg/m³

we know,

Density = mass/volume

m = density x volume

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m =1.20 \times \dfrac{4}{3}\pi\times 15^3

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W = 166422.729 N

Weight of the balloon and the cargo is equal to  W = 166422.729 N

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Answer:

Object B has greater density

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