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
Lilit [14]
3 years ago
8

PHYSICAL SCIENCE

Physics
2 answers:
omeli [17]3 years ago
7 0

Answer:

Option D

Explanation:

Taking 2020 unit test for edu right now.

Nadya [2.5K]3 years ago
7 0

Answer:

D

Explanation:

You might be interested in
Some fish have a density slightly less than that of water and must exert a force (swim) to stay submerged. What force must an 85
vichka [17]

The force require to keep grouper submerged is 8.207N.

According to Archimedes principle  buoyant force of any object must equal to weight of fluid it displaced.

The expression for the force exerted to stay submerged in salt water is

           F = F(b) - w(fish)

 where F(b) = buoyant force

              w(fish) = weight

      now substitute w(b) for F(b)

   →  F = Vρg - w(fish)

where  V = volume of sea water

             ρ = density of sea water

Now by Archimedes principle   V = m(fish)  / ρ(fish)

    →    F = (m(fish) / ρ (fish) ) ρg - m(fish)g

           F =   (85 kg/1015 kg-m^-3) (1.025× 10³ kg-m^-3) (9.8 m/s^2)

                                  -   (85kg)  × 9.8 m/s^2

           F = 841.207N - 833N

           F = 8.207 N

  Hence, the force require to keep grouper submerged is 8.207N.

    Learn more about Archimedes Principle here:

         brainly.com/question/15076878

              #SPJ4

7 0
2 years ago
Please answer offering a lot of points and give brainliest pleaseeeee
asambeis [7]

23 is the right answer.

3 0
3 years ago
Hat processes lead to glacial erosion ?
azamat
Yes......................
8 0
3 years ago
Which is true about atoms?
tiny-mole [99]

Answer:

A

Explanation:

6 0
2 years ago
Read 2 more answers
An owl weighing 40N is sitting in a tree waiting to dive down to catch a mouse. If the owl's potential energy is 800 J with resp
Natali5045456 [20]

Answer:

<em>h = 20 m</em>

Explanation:

<u>Gravitational Potential Energy</u>

Gravitational potential energy (GPE) is the energy stored in an object due to its vertical position or height in a gravitational field.

It can be calculated with the equation:

U=m.g.h

Where m is the mass of the object, h is the height with respect to a fixed reference, and g is the acceleration of gravity or 9.8 m/s^2.

The weight of an object of mass m is:

W = m.g

Thus, the GPE is:

U=W.h

Solving for h:

\displaystyle h=\frac{U}{W}

The weight of the owl is W=40 N and its GPE is U=800 J.

\displaystyle h=\frac{800}{40}=20

h = 20 m

3 0
3 years ago
Other questions:
  • Seafloor spreading causes an oceanic plate to collide with a continental plate. If it were to go through the whole tectonic cycl
    15·2 answers
  • 2)
    10·1 answer
  • all bearings are made by lebng spherical drops of molten metal fall inside a tall tower – called a shot tower – and solidify as
    8·1 answer
  • An train car of total mass of 13000 kg is pulling into a station and slowing down with an acceleration of -4.56 m/s^2. Before th
    7·1 answer
  • All neutron stars are things that produce intense gravity. All neutron stars are extremely dense objects. Therefore, all extreme
    14·1 answer
  • How old is a bone if it still has 50% of its carbon-14 content?
    9·1 answer
  • Does a rolling ball on a level floor have PE or KE? Explain.
    15·1 answer
  • Microwaves are sent through a material causing the molecules in the material to twist and vibrate, causing the material to heat
    15·1 answer
  • Transverse thrusters are used to make large ships fully maneuverable at low speeds without tugboat assistance. A transverse thru
    9·1 answer
  • Through what potential difference must an electron be accelerated from rest to have a de broglie wavelength of 400 nm ?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!