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
yuradex [85]
3 years ago
7

A kayaker needs to paddle north across a 85 m wide harbor. The tide is going out, creating a tidal current that flows to the eas

t at 2.0 m/s. The kayaker can paddle with a speed of 3.4 m/s.
(a) In which direction should he paddle in order to travel straight across the harbor?

(b) How long will it take him to cross?
Physics
1 answer:
marshall27 [118]3 years ago
8 0

Answer:

Explanation:

Let the direction in which he peddles makes an angle of θ with north across

Sinθ = 2 / 3.4

θ = 36 degree ( west of north )

b )

component of his velocity along the north = 3.4 cos 36

= 2.75 m /s

time required = 85 / 2.75 s

= 31 s

You might be interested in
A hydrogen atom in a galaxy moving with a speed of 6.65×106 m/???? away from the Earth emits light with a wavelength of 5.13×10−
Mumz [18]

Answer:

The observed wavelength on Earth from that hydrogen atom is 5.24\times 10^{-7}\ m.

Explanation:

Given that,

The actual wavelength of the hydrogen atom, \lambda_a=5.13\times 10^{-7}\ m

A hydrogen atom in a galaxy moving with a speed of, v=6.65\times 10^6\ m/s

We need to find the observed wavelength on Earth from that hydrogen atom. The speed of galaxy is given by :

v=c\times \dfrac{\lambda_o-\lambda_a}{\lambda_a}

\lambda_o is the observed wavelength

\lambda_o=\dfrac{v\lambda_a}{c}+\lambda_a\\\\\lambda_o=\dfrac{6.65\times 10^6\times 5.13\times 10^{-7}}{3\times 10^8}+5.13\times 10^{-7}\\\\\lambda_o=5.24\times 10^{-7}\ m

So, the observed wavelength on Earth from that hydrogen atom is 5.24\times 10^{-7}\ m. Hence, this is the required solution.

8 0
2 years ago
In which regions can the gravitational field strength due to the two planets be zero? Explain.
yan [13]

Answer:

I believe its a and c but my notes are all kinds of messed up so im sorry if its wrong

Explanation:

7 0
3 years ago
Please help me and show work, will mark Brainliest!!
Licemer1 [7]

Speed is distance over time, learn that formula and look at the image

3 0
3 years ago
A boat having stones floats in water. If stones are unloaded in water, what will happen to the level of water?​
Pani-rosa [81]

Explanation:

If the stones are unloaded from the boat, the weight of the boat will decrease. Therefore, the volume of the water displaced by the boat will also decrease. Due to this, the volume of the boat immersed in the water decreases. Hence, the level of the water around the boat will decrease.

5 0
3 years ago
"the toy car is about 3 inches long"is an example of a ________ observation
koban [17]

It's a quantitative observation because it includes numerical data.

3 0
3 years ago
Read 2 more answers
Other questions:
  • The picture below shows the weather station model at a particular location.
    10·1 answer
  • Work is a transfer of (1 point) energy. force. mass. motion.
    13·2 answers
  • The tenancy of a moving object to continue moving in a strait line or a stationary object to remain in place is called
    13·1 answer
  • Which of these is a correct equation for force? A. F = m × a B. F = m ÷ a C. F = a ÷ m
    5·2 answers
  • A spaceship is travelling at 20,000.0 m/s. After 5.0 seconds, the rocket thrusters are turned on. At the 55.0 second mark, the s
    9·1 answer
  • A wire, 1.0 m long, with a mass of 90 g, is under tension. A transverse wave is propagated on the wire, for which the frequency
    7·1 answer
  • ¿Quien desarrolló el método físico experimental?
    9·1 answer
  • A student read his right ear against his desk while Teacher talks loudly on the desk and can hear the tapping sound only through
    12·1 answer
  • A tank has the shape of an inverted circular cone with height 16m and base radius 3m. The tank is filled with water to a height
    9·1 answer
  • 2. A science book is being pushed across a table. Can the book have a constant speed and a
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!