1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mekhanik [1.2K]
3 years ago
11

The captain of a boat wants to travel directly across a river that flows due exst with a speed of 100 m/sHe starts from the sout

h bank of the river and heads toward the north bankThe boar has a speed of 6.10 m/s respect to the waterIn what direcuon (in degrees) should the captain steer cha is , 100 south, 270 degrees is westand
Physics
1 answer:
Salsk061 [2.6K]3 years ago
7 0

Answer:

86.51° North of West or 273.49°

Explanation:

Let V' = velocity of boat relative to the earth, v = velocity of boat relative to water and V = velocity of water.

Now, by vector addition V' = V + v'.

Since v' = 6.10 m/s in the north direction, v' = (6.10 m/s)j and V = 100 m/s in the east direction, V = (100 m/s)i. So that

V' = V + v'

V' =   (100 m/s)i + (6.10 m/s)j

So, we find the direction,Ф the boat must steer to from the components of V'.

So tanФ = 6.10 m/s ÷ 100 m/s

tanФ = 0.061

Ф = tan⁻¹(0.061) = 3.49°

So, the angle from the north is thus 90° - 3.49° = 86.51° North of West or 270° + 3.49° = 273.49°

You might be interested in
Please help me :Find the resultant of two forces of 1.5N and 2.0N at 90 degrees to each other, with the 1.5N force acting vertic
Roman55 [17]

Answer:

resultant force = (f1²+f2²)½

=(1.5²+2²)½

=(2.25+4)½

=(6.25)½

=2.5

Explanation:

okay this question seems easy. now if the 1.5 is vertically upwards so is that 2 is horizontally downwards hence as u say its 90 degrees thn it forms a right angled triangle.

4 0
3 years ago
Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. The astronaut has her lucky penn
scZoUnD [109]

Oct 27, 2015 - In The Martian, astronaut Mark Watney and his crewmates onboard ... is grossly unqualified to challenge the science behind The Martian. ... of Space on the Law of the Sea, that Treaty has thus far been signed by only a handful of nations, none of which have their own ability to launch astronauts into space ...

4 0
3 years ago
Which of the following describes the importance of cyanobacteria to early Earth atmosphere formation?
Dmitrij [34]

I do believe it is a
6 0
3 years ago
A nuclear power plant, a hydroelectric dam, a coal burning power plant have what in common? A) They are all sources of fuel. B)
Rudik [331]
B) They are all sources of electricity

Hope it helps!!
7 0
3 years ago
Read 2 more answers
List the laws of solid friction​
kumpel [21]

Answer:

The force of friction acts in opposite direction in which the surface is having tendency to move.

The force of friction is equal to force applied to surfaces, so long as surface is at rest.

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Newton's first law of motion is also called the law of acceleration true or false
    9·1 answer
  • A meteoroid is in a circular orbit 600 km above the surface of a distant planet. The planet has the same mass as Earth but has a
    13·1 answer
  • If a car is moving at 90 km/h and it rounds a corner, also at 90 km/h, does it maintain a constant speed? A constant velocity? I
    5·1 answer
  • The earth revolves around the sun in the counterclockwise direction, completing one full revolution about every 365 days. In rea
    14·1 answer
  • 4. For a series of experimentally measured values give the definition of (a) average or mean value (b) the deviation from the me
    10·1 answer
  • Help me please I can't get the final step​
    12·1 answer
  • What is a frame of reference? how is it used to measure motion? ​
    7·1 answer
  • Isaac Newton discovered the three laws of motion. Which example best illustrates Newton's third law of motion, which describes a
    11·1 answer
  • According to Newton’s law of universal gravitation, as the mass or one or both bodies increases, what happens to the force of at
    9·1 answer
  • Changr 20 min in to hr​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!