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3 years ago

The bearing of lines A and B are 16Â° 10` and 332Â° 18`, the value of the included angle BOA is:_______

Physics

1 answer:

slega [8]3 years ago

3 0

Answer:

D. 43Â° 52`

Explanation:

A bearing is an angle, measured clockwise from the north direction. When solving a bearing problem, it is good to represent the bearings in the given question with diagram.

The diagrammatically representation of the bearing of lines A and B, 16Â° 10` and 332Â° 18` respectively given in the question is shown in the figure attached.

At Point A, we will calculate angle ∠BAO.

Calculating the angle ∠BAO

∠BAO = 90° - 16Â° 10`

= 73Â° 50`

At Point B, we will calculate angle ∠ABO.

Calculating the angle ∠ABO

∠ABO = 332Â° 18` - 270Â° 0`

= 62Â° 18`

At Point O, we will calculate the include angle ∠BOA.

Calculating the angle ∠BOA

∠BAO + ∠ABO + ∠BOA = 180° (sum of angles in a triangle)

73Â° 50` + 62Â° 18` + ∠BOA = 180°

136Â° 8` + ∠BOA = 180°

∠BOA = 180° - 136Â° 8`

∠BOA = 43Â° 52`

The value of the included angle BOA is 43Â° 52

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Explanation:

Assuming the squirrel is jumping off the ground, here's what we know but don't really know...

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Moving on here's what we also know:

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Remember that at the very top of the parabolic path, the final velocity is 0. In order to find the max height of the squirrel, we need to know how long it took him to get there. We are using 2 of our 3 one-dimensional equations in this problem. To find time:

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Now that we know how long it took him to get to the max height, we use that in our next one-dimensional equation:

Δx = $v_0t+\frac{1}{2}at^2$ and filling in:

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3 years ago

Which of the following describes a condition in which an individual would not hear an echo?

IrinaVladis [17]

If the echo (the reflected sound) reaches your ear less than about
0.1 second after the original sound, your brain doesn't separate them,
and you're not aware of the echo even though it's there.

If the echo comes from, say, a wall, 0.1 second means you'd have to be
about 17 meters away from the wall. If you're closer than that, then the
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A. 30 meters . . .
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B. you're standing within range of both sounds . . .
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3 years ago

Read 2 more answers

Aircraft sometimes acquire small static charges. Suppose a supersonic jet has a 0.55 μC charge and flies due west at a speed of

Illusion [34]

Answer:

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B = magnitude of magnetic field in the region = 8 x 10⁻⁵ T

θ = angle between the magnetic field and direction of motion = 90

magnitude of the magnetic force is given as

F = q v B Sinθ

F = (0.55 x 10⁻⁶) (685) (8 x 10⁻⁵) Sin90

F = 3.014 x 10⁻⁸ N

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