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The speed of the river is 2 km / h. How long does it take for a boat to cover 30 km downstream if it covers this distance

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education

Initial data: V (the speed of the motorcyclist) = 18 km / h, S (the distance traveled by the motorcycle) = 450 m. SI system: V = 18

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education

1. Let’s calculate the mass of the salt contained in the initial solution: m (salt) = w (salt) * m (solution) = 0.5 * 800 = 400 g;

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education

Initial data: V (oxygen volume) = 30 l (30 * 10 ^ -3 m3); P (oxygen pressure) = 5 * 105 N / m2 (5 * 10 ^

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education

In a right-angled triangle, the angle between the height and the bisector drawn from the vertex of the right angle is 39. Find the smaller angle of this

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education

In order to find the sides of a parallelogram, we will compose and solve an equation. But first of all, let’s start by looking at the condition of

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We will use the property of the rectangle diagonals, which are equal to each other, and are divided in half at the point of intersection, then BD =

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education

The Earth is characterized by the process of various surface heating of the surface, which is due to the surface structure of the Earth. Since the planet has

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education

When the radio was operating, the wind blew from west to east at a speed of 25 m / s. Determine the speed of sound propagation in this

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education

A sled with a weight of 75 kg rolls down a mountain 12 m high and 80 m long, find the speed at the end of the path

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