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
Levart [38]
2 years ago
6

Which of the following was NOT one of Ghana's chief trading exports?

Physics
1 answer:
valina [46]2 years ago
3 0
The answer is b. ivory
You might be interested in
Which layer of the earth includes the ozone layer
Rus_ich [418]
Troposphere is the answer
7 0
3 years ago
Could someone please help me with this question?​
Elenna [48]
1 because the the mid night summer is dark
3 0
3 years ago
A 5.92 g object moving to the right at 17.1 cm/s makes an elastic head-on collision with an 11.84 g object that is initially at
Lelechka [254]

Answer:

v₁f = -5.7 cm/s

Explanation:

  • Assuming no external forces acting during the collision, total momentum must be conserved, as follows:

        m_{1} * v_{10} = m_{1} *v_{1f} + m_{2} * v_{2f} (1)

  • Rearranging terms, we have:

        m_{1} * (v_{10} - *v_{1f} ) = m_{2} * v_{2f} (2)

  • We also know that the collision is elastic, so total kinetic energy must be conserved , as follows:

        \Delta K = 0 \\ \\ \frac{1}{2} * m_{1} *v_{10} ^{2} = \frac{1}{2}* m_{1}  *v_{1f} ^{2}  + \frac{1}{2}* m_{2}  *v_{2f} ^{2} (3)

  • Rearranging , and simplifying common terms, we have:

        m_{1}* (v_{10} ^{2} -v_{1f} ^{2} ) = m_{2}  *v_{2f} ^{2} (4)

  • Replacing by the givens, doing some algebra and dividing (4) by (2), we find the following relationship:

        v_{10} + v_{1f} = v_{2f}

  • Replacing the expression above in (1), as m₂ = 2*m₁, we can find the value of v₁f, as follows:

       m_{1} * v_{10}  = m_{1} * v_{1f} +2*m_{1} * (v_{10} + v_{1f})\\ \\ -(m_{1} * v_{10}) = 3* m_{1} *v_{1f} \\ \\ v_{1f} = - \frac{v_{10} }{3}  = \frac{-17.1cm/s}{3} = -5.7 cm/s

7 0
3 years ago
What evidence did astronomers use to prove jets travel in opposite directions?
mr Goodwill [35]

The evidence that astronomers use to prove jets travel in opposite direction is Spectral lines from a very fast moving ionized gases.

<h3>Who are the astronomers?</h3>

Astronomer is a person who study astronomy which is a scientific study that has to do with space, space bodies, comets, planets, stars and so on.

Therefore, The evidence that astronomers use to prove jets travel in opposite direction is Spectral lines from a very fast moving ionized gases.

Learn more about astronomers below.

brainly.com/question/10826203

#SPJ11

7 0
1 year ago
Read 2 more answers
Describe two of Tesla's inventions that influenced<br> technology and are still in use today.
victus00 [196]
The remote control, and wireless transmissions
3 0
2 years ago
Other questions:
  • The velocity of sound on a particular day outside is 331 meters/second. What is the frequency of a tone if it has a wavelength o
    6·2 answers
  • The action of property being taken directly from a person or in that person's presence must be an element in which type of crime
    6·1 answer
  • A car has a mass of 1200kg what is it’s acceleration when the engine exerts a force of 600 n
    11·1 answer
  • The bending of waves as they pass between media is called .?
    5·2 answers
  • A single-slit diffraction pattern is formed on a distant screen. Assuming the angles involved are small, by what factor will the
    14·1 answer
  • 7. A student walks 3 blocks east, 4 blocks north, and 3 blocks west. What is the displacement of the student? (5 points)
    10·2 answers
  • Why does sound propagate faster in solid bodies than in liquids and faster in liquids than in air?
    14·1 answer
  • I can fly but have no wings. I can cry but I have no eyes. Wherever I go, darkness follows me. What am I?
    12·2 answers
  • The intensity of a sound wave at a fixed distance from a speaker vibrating at 1.00 kHz is 0.750 W/m2. (a) Determine the intensit
    5·1 answer
  • Does light have to have a medium to pass through?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!