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
Molodets [167]
3 years ago
6

A block floats partially submerged in a container of liquid. When the entire container is accelerated upward, which of the follo

wing happens? Assume that both the liquid and the block areincompressible.
(A) The block descends down lower into the liquid.(B) The block ascends up higher in the liquid.(C) The block does not ascend nor descend in the liquid.
(D) The answer depends on the direction of motion of the container.(E) The answer depends on the rate of change of the acceleration
Physics
1 answer:
Nookie1986 [14]3 years ago
7 0

Answer:C

Explanation:

Partially submerged block along with vessel is accelerated upwards .

Initially the block weight is supported by buoyant force such that it is in equilibrium.

when the system start accelerating upwards then the effective gravity will be

g+a where a is the acceleration of the system.

so only net gravity is increased so block will not ascend or descend.

Mathematically

F_b=weight

\rho _L\cdot V\cdot (g+a)=m(g+a)

where \rho _L=density of liquid

V=volume of object inside the water

                         

You might be interested in
Calculate the orbital period of a dwarf planet found to have a semimajor axis of a = 4.0x 10^12 meters in seconds and years.
padilas [110]

Explanation:

We have,

Semimajor axis is 4\times 10^{12}\ m

It is required to find the orbital period of a dwarf planet. Let T is time period. The relation between the time period and the semi major axis is given by Kepler's third law. Its mathematical form is given by :

T^2=\dfrac{4\pi ^2}{GM}a^3

G is universal gravitational constant

M is solar mass

Plugging all the values,

T^2=\dfrac{4\pi ^2}{6.67\times 10^{-11}\times 1.98\times 10^{30}}\times (4\times 10^{12})^3\\\\T=\sqrt{\dfrac{4\pi^{2}}{6.67\times10^{-11}\times1.98\times10^{30}}\times(4\times10^{12})^{3}}\\\\T=4.37\times 10^9\ s

Since,

1\ s=3.17\times 10^{-8}\ \text{years}\\\\4.37\times 10^9\ s=4.37\cdot10^{9}\cdot3.17\cdot10^{-8}\\\\4.37\times 10^9\ s=138.52\ \text{years}

So, the orbital period of a dwarf planet is 138.52 years.

3 0
3 years ago
Abdou was explaining to a classmate that graphite is a good lubricant
balu736 [363]

The fact that the layers of graphite are held together by only weak Van der Walls forces implies that they can slide over each other.

<h3>Why is graphite a solid lubricant?</h3>

We know that graphite is composed of layers. These hexagonal layers are held together by weak Van Der Walls forces and as such are able to slide over each other. The carbon atom in each layer are held together by strong covalent bonds.

The fact that the layers of graphite are held together by only weak Van der Walls forces implies that they can slide over each other and as such make the graphite fluid.

Thus, the image that shows these layers of graphite is attached to this an answer

Learn more about graphite:brainly.com/question/11095487

#SPJ1

3 0
1 year ago
Two test tubes are filled with a solution of bromthymol blue. A student exhales through a straw into each tube, and the bromthym
saw5 [17]

Answer:

oxygen was produced by phosynthesis

Explanation:

kkkkk

8 0
2 years ago
HELP ME HOW ARE BLACK HOLES FROMED
V125BC [204]

Answer:

Stellar black holes form when the center of a very massive star collapses in upon itself.

6 0
2 years ago
Read 2 more answers
How many atoms are in a sample of 2.39 moles of neon (Ne) atoms?
Reil [10]
<span>Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles.

 </span>2.39 moles Ne ( 6.022 x 10^23 atoms / mole ) = 1.44 × 10^24 atoms Ne
4 0
2 years ago
Other questions:
  • A motorcycle starts from rest and has a constant acceleration. In a time interval t, it undergoes a displacement x and attains a
    6·1 answer
  • What would happen happen if a car crashes​
    14·1 answer
  • Find the equivalent resistance of this parallel circuit with two strands.
    11·1 answer
  • What is the primary ingredient of power yoga?
    13·1 answer
  • Steve walks from his house 5 km South then turns east and walks 2 km. Then he walks 9 km North to his older sister's house. She
    5·1 answer
  • Explain what happens when a ferromagnetic material is made into a permanent magnet.
    8·1 answer
  • Use the following information about Earth and its moon to determine the distance between them. Earth's mass = 6.0 x 1024 kg Moon
    12·2 answers
  • Why does the cord of an electric heater not glow while the heating element does​
    7·1 answer
  • What happens when an electrically charged balloon is placed close to an uncharged soda can?
    8·2 answers
  • Identify the amplitude of the wave using the picture below.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!