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jekas [21]
3 years ago
13

A 15kg dog jumps out of a 40kg canoe. If the dogs velocity is 1.2m/s, what is the velocity of the canoe?

Physics
1 answer:
vivado [14]3 years ago
6 0

Answer:

v = -0.45 m/s

Explanation:

Assuming the canoe was initially at rest with momentum L = 0

and that the dog's velocity is in the positive direction

conservation of momentum

0 = 15(1.2) + 40v

v = -0.45 m/s

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Which takes place as water cycles from the bottom of the pot toward the top?
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An office window has dimensions 3.1 m by 2.1 m. As a result of the passage of a storm, the outside air pressure drops to 0.954 a
Virty [35]

Answer:

Net forces which pushes the window is 30342.78 N.

Explanation:

Given:

Dimension of the office window.

Length of the window = 3.1 m

Width of the window = 2.1 m

Area of the window = (3.1\times 2.1) = 6.51\ m^2

Difference in air pressure = Inside pressure - Outside pressure

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Conversion of the pressure in its SI unit.

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⇒ 0.046 atm = 0.046\times 101325 =4660.95 Pa

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We know,

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⇒ Plugging the values.

⇒ Force =4660.95\times 6.51

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The net forces which pushes the window is 30342.78 N.

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