Physics, 27.11.2019 09:31 EnzoF17

Ariver flows due south with a speed of 1.4 m/s . you steer a motorboat across the river; your velocity relative to the water is 4.7 m/s due east. the river is 660 m wide. part a what is the magnitude of your velocity relative to the earth? express your answer with the appropriate units.

Answers: 3

Show answers

Answers

Refer to the diagram shown below.

The river flow south at a velocity of 1.4 m/s.
The motorboat moves east with velocity of 4.7 /s

The velocity of the motorboat relative to the earth, v, is the vector sum of the two velocities. Its magnitude, by the Pythagorean theorem, is
v = √(4.4² + 1.4²)
= 4.904 m/s

Its direction south of east, is at an angle, θ, given by
tan θ = 1.4/4.7 = 0.298
θ = tan⁻¹ 0.298 = 16.6°

The velocity of the motorboat is 4.9 m/s, at 16.6° south of east.
Ariver flows due south with a speed of 1.4 m/s . you steer a motorboat across the river; your veloc

Ariver flows due south with a speed of 1.4 m/s . you steer a motorboat across the river; your veloc

Answer from: Quest

Iread this book last year so take this with a grain of salt.gene jumps from the tree to compete with finny due to the fact that gene is always trying to do better than finny. he is put under the grasp of peer pressure due to finny almost forcing him to do this. ever since he first jumped finny kept pressuring him to jump since he thought gene enjoyed jumping.rather than uses this answer you should probably just reread chapters 3-4

Answer from: Quest

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.

Other questions on the subject: Physics

Physics, 21.06.2019 14:30, ozzy55

Foreshadowing. the prologue states that this is the story of "star-crossed lovers." there are four strong foreshadowings of evil in act 1. identify at least two foreshadowings and explain their purpose.

Answers: 1

continue

Physics, 22.06.2019 00:00, morgaaaan3835

Suppose that recording station n is located 200 km north of the epicenter of an earthquake, and recording station s is located 100 km south of the epicenter of the same earthquake. which of the following statements would be true?

Answers: 2

continue

Physics, 22.06.2019 14:00, jeff6284

How to tell if two objects are in thermal equilibrium 1.the objects have the same temperature 2.the objects are the same size 3.the objects are touching each other 4.the objects temperatures are changing

Answers: 1

continue

Physics, 22.06.2019 20:10, hncriciacheichi

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.

Answers: 1

continue

You know the right answer?

Ariver flows due south with a speed of 1.4 m/s . you steer a motorboat across the river; your veloc...