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Rudik [331]
4 years ago
14

The boat can travel with a speed of 16 km>h in still water. The point of destination is located along the dashed line. If the

water is moving at 4 km>h, determine the bearing angle u at which the boat must travel to stay on course.
Physics
1 answer:
Nostrana [21]4 years ago
6 0

Answer:

the bearing angle at which the boat must travel to stay on course is 75.5°

Explanation:

To determine the bearing angle  at which the boat must travel to stay on course;

we construct a right angled triangle, with the speed of water adjacent to the speed of the boat which is the hypotenuse.

The angle between them is the bearing angle at which the boat must travel to stay on course.

Let the angle between the still water and boat = θ

Cos θ = 4/16

Cos θ = 0.25

θ = cos⁻¹ (0.25)

θ  =  75.5°

Therefore, the bearing angle at which the boat must travel to stay on course is 75.5°

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<h3>What are Newton's 3rd law examples?</h3>

Action and response are always equal but always move in the opposite direction, according to Newton's third law of motion. A human walking on the ground, a hammer driving a nail, a magnet attracting a paper clip, and a horse pulling a cart are all examples of Newton's third rule of motion.

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3 0
2 years ago
In standard household wiring, parallel wires about 1 cm apart carry currents of about 15 A.
VashaNatasha [74]

Answer:

0.00225 N/m

Explanation:

Parameters given:

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Current in second wire, I(2) = 15A

Distance between two wires, R = 1cm = 0.01m

The force per unit length between two current carrying wires is:

F/L = μ₀I(1)I(2)/2πR

μ₀ = 4π * 10^(-7) Tm/A

F/L = [4π * 10^(-7) * 15 * 15] / (2π * 0.01)

F/L = 2.25 * 10^(-3) N/m or 0.00225 * 10^(-3) N/m

6 0
3 years ago
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You use a 1200-watt hair dryer for 10 minutes each day. a. How many minutes do you use the hair dryer in a month? (Assume there
sertanlavr [38]
300 minuts
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3 0
3 years ago
An electron, moving south, enters a uniform magnetic field. Because of this uniform magnetic field, the electron curves upward.
Flura [38]

Answer:

Towards the west

Explanation:

Magnetic force is the interaction between a moving charged particle and a magnetic field.

Magnetic force is given as

F = q (V × B)

Where F is the magnetic force

q is the charge

V is the velocity

B is the magnetic field

V×B means the cross product of the velocity and the magnetic field

NOTE:

i×i=j×j×k×k=0

i×j=k.  j×i=-k

j×k=i.  k×j=-i

k×i=j.  i×k=-j

So, if the electron is moving southward, then, it implies that the velocity of it motion is southward, so the electron is in the positive z-direction

Also, the electron is curved upward due to the magnetic field, this implies that the force field is directed up in the positive y direction.

Then,

V = V•k

F = F•j

Then, apply the theorem

F •j = q ( V•k × B•x)

Let x be the unknown

From vector k×i =j.

This shows that x = i

Then, the magnetic field point in the direction of positive x axis, which is towards the west

You can as well use the Fleming right hand rule

The thumb represent force

The index finger represent velocity

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3 0
3 years ago
What physical properties does europium have
elixir [45]

Answer:

The properties are a bright, shiny surface with a Silver color. It is softer than other solid thing around it, such as a table

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3 years ago
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