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
Vlada [557]
3 years ago
9

A rock is suspended by a light string. When the rock is in air, the tension in the string is 43.8 N . When the rock is totally i

mmersed in water, the tension is 31.3 N . When the rock is totally immersed in an unknown liquid, the tension is 18.3 N .
Physics
1 answer:
sergeinik [125]3 years ago
4 0

Answer:

Density of unknown liquid is 2047 kg/m^3

Explanation:

When rock is suspended in air then the weight of the rock is counter balanced by the tension force in the string

So here we have

T = mg = 43.8 N

now when the rock is immersed in water then the tension in the string is and buoyancy force due to water is counter balanced by the weight of the object

so here we have

T_1 + F_b = mg

31.3 + F_b = 43.8

F_b = 43.8 - 31.3 = 12.5 N

now we have

(1000)V(9.81) = 12.5

V = 1.27 \times 10^{-3} m^3

now when the rock is immersed into other liquid then we have

T_2 + F_b' = mg

18.3 + F_b' = 43.8

F_b' = 25.5 N

now we have

\rho(1.27 \times 10^{-3})(9.81) = 25.5

\rho = 2047 kg/m^3

You might be interested in
Electrons orbit the nucleus in specific, defined paths. Each path has a specified energy. Bohr model electron cloud model Dalton
AVprozaik [17]
<span>The answer would be A)  Bohr model

</span>
5 0
3 years ago
Read 2 more answers
Why is hydroelectric power considered to be an example of multiple transfers of energy?
Radda [10]
Hydroelectric power is considered to be an example of multiple transfers of energy because potential energy when the water is in the reservoir turns into kinetic energy making the water move to the dam and then the dam moves into the turbine turning it to electric energy.  
7 0
3 years ago
What type of simple machine is found in a wheelbarrow?<br><br> Lever<br><br> Wedge
Semenov [28]

Answer: Lever

A wheelbarrow consists of a lever to be able to lift the material, and a wheel to be able to move it horizontally. So in a sense, a wheelbarrow is a complex machine consisting of two simple machines.

8 0
3 years ago
Read 2 more answers
Which statement best describes a wave?
dedylja [7]

Correct answer choice is:

D. A continuous transmission of energy from one location to the next.

Explanation:

Waves include the carrier of energy without the carrier of matter. In outcome, a wave can be characterized as a change that progresses into a medium, carrying energy from one spot (its source) to different spot without carrying matter.

3 0
3 years ago
Read 2 more answers
List at least three things that can happen as plate spread apart.
Nookie1986 [14]
Centre of Mass then axis of rotation and then moment of inertia. This was the toughest question for your level... happy to help ^_^. It was purely experimental question.
8 0
3 years ago
Other questions:
  • The elastic portion of the downward-sloping straight-line demand curve lies:_______
    13·1 answer
  • PLEASE HELP
    5·1 answer
  • The volume of a cylinder is V space equals space pi space r squared space h, where r is the radius of the circular faces and h i
    9·1 answer
  • What does a negative moment of inertia mean?
    6·1 answer
  • A truck is traveling with 50,000 J of kinetic energy. It
    6·1 answer
  • How does a comet change as it travels through space
    12·1 answer
  • This means divide or to take apart the pieces. ( science )
    14·1 answer
  • A football goalkeeper moves across her goal in a straight line. Her motion is shown on the following graph of horizontal positio
    5·1 answer
  • What is the gravity of sombrero galaxy compared to earth?
    5·2 answers
  • A ball accelerate downward at 9.8 m/s2 with 1.7 of force. What is the mass of the ball?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!