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LenaWriter [7]
3 years ago
12

A force of 10N is making an angle of 30with the horizontal. Its vertical componentwill be;​

Physics
1 answer:
snow_lady [41]3 years ago
7 0

Explanation:

The vertical component = 10sin30° = 5.0N.

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Which of the following concepts best explains why a mass of low-density material in the mantle rises?Multiple Choice Strain Buoy
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Answer:

Bouyancy

Explanation:

Bouyancy occurs when the upthrust exerted on an object is equal to the weight of object displaced. It is mostly applicable to low density objects for example balloon. When balloon is displaced in water, it floats. This is due to the effect of the upthrust acting on the balloon which allows the balloon to float and which is opposite the weight.

Note that the weight acts downwards the object while the upthrust always acts opposite (upward)

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3 years ago
Machmer Hall is 400 m North and 180 m West of Witless.
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Answer:

The distance from Witless to Machmer is 438.63 m.

Explanation:

Given that,

Machmer Hall is 400 m North and 180 m West of Witless.

We need to calculate the distance

Using Pythagorean theorem

D = \sqrt{(d_{m})^2+(d_{w})^2}

Where, d_{m} =distance of Machmer Hall

d_{w} =distance of Witless

Put the value into the formula

D = \sqrt{(400)^2+(180)^2}

D=438.63\ m

Hence, The distance from Witless to Machmer is 438.63 m.

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3 years ago
Choose all the answers that apply. The sun: -is the largest star in our solar system -is the largest star in our galaxy
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-is made mostly of hydrogen and helium.

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A father wanted to explain how the moon shines to his 5-year old child by comparing it to an object that the child uses. Which s
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Answer:

The moon is like a mirror. It reflects light produced by the Sun

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An airplane undergoes the following displacements: First, it flies 40 km in a direction 30° east of north. Next, it flies 56 km
goldfiish [28.3K]

Answer:

Distance from start point is 72.5km

Explanation:

The attached Figure shows the plane trajectories from start point (0,0) to (x1,y1) (d1=40km), then going from (x1,y1) to (x2,y2) (d2=56km), then from (x2,y2) to (x3,y3) (d3=100). Taking into account the angles and triangles formed (shown in the Figure), it can be said:

x1=d1*cos(60), y1=d1*sin(60)\\\\ x2=x1 , y2=y1-d2\\\\ x3=x2-d3*cos(30) , y3=y2+d3*sin(30)

Using the Pitagoras theorem, the distance from (x3,y3) to the start point can be calculated as:

d=\sqrt{x3^{2} +y3^{2} }

Replacing the given values in the equations, the distance is calculated.

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3 years ago
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