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
photoshop1234 [79]
3 years ago
11

At the bottom of the ocean, a rock has a mass 25 g. At sea level, the same rock will have a mass of: less than 25 g, more than 2

5 g, or the same as 25 g?
Physics
2 answers:
storchak [24]3 years ago
5 0
It will be same 25 g
ivann1987 [24]3 years ago
5 0

Answer:

Option (2)

Explanation:

The weight of an object is always more at the sea level than at the base of the ocean floor. The water always forces an upward thrust to an object, as a result of which the weight of the object gets reduced by a certain amount. This property of water generating an upward force is known as the the buoyancy.

Thus, if an object weighs 25 grams at the ocean floor, then at the mean sea level, the weight is slightly more than 25 grams.

Hence, the correct answer is option (2).

You might be interested in
The Hubble Space Telescope has a mass of 1.16*10^ 4 kg and orbits the Earth at an altitude of 5.68 * 10 ^ 5 above Earth's surfac
andrezito [222]

Answer:

E=8.13\times 10^{12}\ J

Explanation:

Given that,

The mass of a Hubble Space Telescope, m_1=1.16\times 10^4\ kg

It orbits the Earth at an altitude of 5.68\times 10^5\ m

We need to find the potential energy the telescope at this location. The formula for potential energy is given by :

E=\dfrac{Gm_1m_e}{r}

Where

m_e is the mass of Earth

Put all the values,

E=\dfrac{6.67\times 10^{-11}\times 1.16\times 10^4\times 5.97\times 10^{24}}{5.68\times 10^5}\\\\E=8.13\times 10^{12}\ J

So, the potential energy of the telescope is 8.13\times 10^{12}\ J.

5 0
2 years ago
Q2. You push a crate up a ramp with a force of 10 N. Despite your pushing, the crate slides down the ramp 4 m. How much work did
Ksivusya [100]

Answer:

40 J

Explanation:

From the question given above, the following data were obtained:

Force (F) = 10 N

Distance (s) = 4 m

Workdone (Wd) =?

Work done is simply defined as the product of force and distance moved in the direction of the force. Mathematically, we can express the Workdone as:

Workdone = force × distance

Wd = F × s

With the above formula, we can obtain the workdone as follow:

Force (F) = 10 N

Distance (s) = 4 m

Workdone (Wd) =?

Wd = F × s

Wd = 10 × 4

Wd = 40 J

Thus, 40 J of work was done.

5 0
2 years ago
if a star 100 light years from earth is beginning to expand into a giant star how long will it take for astronomers to observe t
VikaD [51]

Answer:

100years later

Explanation:

Because the lights will arrive at world after 100 years later.

7 0
3 years ago
A mass on a horizontal surface is connected to the spring and pulled to the right along the surface stretching the spring by 25
solniwko [45]

Answer:

320 N/m

Explanation:

From Hooke's law, we deduce that

F=kx where F is applied force, k is spring constant and x is extension or compression of spring

Making k the subject of formula then

k=\frac {F}{x}

Conversion

1m equals to 100cm

Xm equals 25 cm

25/100=0.25 m

Substituting 80 N for F and 0.25m for x then

k=\frac {80}{0.25}=320N/m

Therefore, the spring constant is equal to 320 N/m

3 0
3 years ago
In which point the electric intensity of a sphere is maximum​
g100num [7]
Here, as the charge is uniformly distributed in the sphere, we will consider s as an area of the sphere which is, s=4πr2 and r is radius of the gaussian surface shown in the figure above. From this, it can be seen that
7 0
2 years ago
Other questions:
  • Discuss renewable and nonrenewable resources. Give at least two advantages and two disadvantages of each. (4 points)
    15·1 answer
  • Help with these questions please , 15 PTS & brainliest
    14·1 answer
  • Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and a cloud at an al
    14·1 answer
  • A charge -353e is uniformly distributed along a circular arc of radius 5.30 cm, which subtends an angle of 48°. What is the line
    6·1 answer
  • A. What is the basic building block of matter?
    12·2 answers
  • A 500 500500- kg kgstart text, k, g, end text object is accelerating to the right at 10 cm / s 2 10 cm/s 2 10, start text, space
    8·2 answers
  • Hey guys I need help please help me what do y’all think it is I need help And I’m struggling
    6·2 answers
  • Need some help !!!!!!!!!
    5·2 answers
  • A 1700 kg car is moving with a velocity of 20 m/s and stops.
    11·1 answer
  • Help please :)))))))))))
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!