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Pachacha [2.7K]

4 years ago

7

This question is driving me crazy. Help pleeeeaaaassseeeee. :)

1 answer:

Alex Ar [27]4 years ago

3 0

Explanation:

PRIMERP SE ENCUENTRAN LAS COMPONENTES HORIZONTAL Y

VERTICAL

<em>x</em> = - 6.00 m(cos 30.0°) + 5.00 m = - 0.22 m

<em>y</em> = -6.00 m(sen 20.0° + 0 m = -3.00 m

PARA ENCONTRAR LA MAGNITUD RESULTANTE SE USA EL TEOREMA

DE PITÁGORAS.

R = $\sqrt{(-0.20 m)^{2} + (-3.00 m)^{2}}$ = 3.01 m

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Savatey [412]

Answer:

$41.81^{\circ}$

Explanation:

The tidal current flows to the east at 2.0 m/s and the speed of the kayaker is 3.0 m/s.

Let Vector $\overrightarrow{OA}$ is the tidal current velocity as shown in the diagram.

In order to travel straight across the harbor, the vector addition of both the velocities (i.e the resultant velocity, $\vec {R}$ must be in the north direction.

Let $\overrightarrow{AB}$ is the speed of the kayaker having angle \theta measured north of east as shown in the figure.

For the resultant velocity in the north direction, the tail of the vector $\overrightarrow {OA}$ and head of the vector $\overrightarrow{AB}$ must lie on the north-south line.

Now, for this condition, from the triangle OAB

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4 years ago

_______is the product of a force and the time during which the force acts

saul85 [17]

Answer:

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3 years ago

On a hike, you travel 2800 m in 2 h. What is your average speed?

Marina86 [1]

<h2>Greetings!</h2>

Firstly, to find speed you need to remember the speed formula:

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You can do it by doing 2800 ÷ 2 but that gives m/h (metres per hour)

So to convert hours into seconds, you multiply 2 by 7200 (amount of second in 2 hours:

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Now we can do distance ÷ time by plugging the values in:

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3 years ago

A standard biological microscope is required to have a magnification of 200Ã. what is the focal length of the objective?

NISA [10]

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The focal length of the objective is L/20.

Explanation:

Given that,

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