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
-Dominant- [34]
2 years ago
12

Two children of mass 18 kg and 29 kg sit balanced on a seesaw with the pivot point located at the center of the seesaw. If the c

hildren are separated by a distance of 5 m, at what distance from the pivot point is the small child sitting in order to maintain the balance?
Physics
1 answer:
DedPeter [7]2 years ago
7 0

Answer:

3.085 [m].

Explanation:

1) The rule:

m₁*g*l₁=m₂*g*l₂, where m₁ and l₁ - the mass and distance for the small child, m₂ and l₂ - for the big child;

2) according to the condigion l₁+l₂=5, then

3) it is possible to make up the system:

\left \{ {{l_1+l_2=5} \atop {m_1*l_1=m_2*l_2}} \right. \ = > \ \left \{ {{l_1=5-l_2} \atop {18*(5-l_2)=29*l_2}} \right. \ = > \ \left \{ {{l_1=\frac{145}{47}} \atop {l_2=\frac{90}{47}}} \right.

4) finally, l₁=145/47≈3.085 [m].

You might be interested in
Imagine that you are approaching a black hole in a spacecraft. What would you see? What would happen to you?
goldfiish [28.3K]
As you approach the event horizon, your body would be pulled towards the black hole. It's a process called sphagettification.

As for what you see, that is hard to explain without showing a video, at least for me, but you would see this black hole (ha) and whatever is outside starts to flatten and condense (from your POV) then you would fall into the black hole and then it's complete blackness.
3 0
3 years ago
Read 2 more answers
Explain how the properties of alpha, beta and gamma radiation affect the level of hazard at different distances.
Mumz [18]

Answer:

Radiation can be absorbed by substances in its path. For example, alpha radiation travels only a few centimetres in air, beta radiation travels tens of centimetres in air, and gamma radiation travels very large distances. ... The thicker the substance, the more the radiation is absorbed

8 0
3 years ago
Which choice correctly describes what happens during heating?
Masja [62]

Answer:

Option 4

Explanation:

During heating actually heat transfer takes place from a body at higher temperature to a body at lower temperature and the heat transfer takes place until both attain the same temperature  

Therefore heat transfer depends on the temperature of the systems

Now while comparing the thermal energies of the systems, if both the systems have same mass then the system which is at higher temperature has greater thermal energy when compared to the system which is at lower temperature

So in this case assuming that both the systems have same mass then the energy will leave the system with greater thermal energy and go into the system with less thermal energy as the system with greater thermal energy in this case will be at higher temperature and we are considering this assumption because thermal energy not only depends on temperature but also depends on mass of the system

7 0
4 years ago
Sound is repeated near hills....<br>Why??? ​
madam [21]

Answer:

because there is many places for it to bounce of of creating another soundwave

5 0
3 years ago
Fl-19 in florida, if your pwc is equipped with an engine cut-off lanyard, what must you do with it?
melamori03 [73]

Answer: Attach it to clothing, personal flotation device or the person's person.

Explanation:

This particular Question or problem has to do with the rules and regulations or laws governing the use of Personal Watercraft(PWC) in the state of Florida in the United States of America. Hence, one of the rules that is applicable to the use of boats and waterways or the use of personal watercraft in Florida is that in florida, if ones pwc is equipped with an engine cut-off lanyard the person operating it must ATTACH IT TO THE CLOTHING, PERSONAL FLOATATION DEVICE IR THE OPERATORS' PERSON.

Another rule band the use of flammable personal flotation device with Personal Watercraft(PWC) in the state of Florida. All this rules and guildlines are made to limit or minimize hazards.

3 0
3 years ago
Other questions:
  • Help me slove this problem 115 divided by 2
    14·2 answers
  • A portion of Nichrome wire of radius3.70mm is to be used in winding a heating coil. If the coil must draw a current of9.85A when
    13·1 answer
  • What is the frequency of a wave that has a wavelength of 20 cm and a speed of 10 m/s? 0.5 Hz 50 Hz 10 Hz 200 Hz
    12·2 answers
  • How will the motion of an object that is moving to the right change, if it is pushed in the opposite direction with a greater fo
    13·1 answer
  • a 64 l gas tank is filled completely is 15 degree celsius how much gasoline overflows into can get up to 35 degree celsius while
    15·1 answer
  • A child sits on a merry-go-round, 1.5 meters from the center. The merry-go-round is turning at a constant rate, and the child is
    12·1 answer
  • Explain the<br> difference between an<br> oxygen atom and a carbon atom
    8·1 answer
  • A 215 N box is placed on an inclined plane that makes a 35.0 degree angle with the horizontal.  What applied force is needed to
    12·1 answer
  • How much is half of the magnetic field of the earth
    10·1 answer
  • How does the egg drop project apply to everyday life​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!