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
marin [14]
3 years ago
15

A spring scale calibrated in kilograms is used to determine the density of a rock specimen. The reading on the spring scale is 0

.45 kg when the specimen is suspended in air and 0.36 kg when the specimen is fully submerged in water. If the density of water is 1000 kg/m3, the density of the rock specimen is_________.
Physics
1 answer:
denpristay [2]3 years ago
4 0

Answer:

5000 kg/m^3

Explanation:

Here. we are asked to calculate the density of the rock specimen.

we proceed as follows;

mass of water displaced is calculated by finding the difference between the actual and apparent masses

This has a value of 0.45kg - 0.36kg = 0.09kg

The rock and water that is displaced have exactly the same volume and thus their densities is the same. This makes the ratio of their masses to be the same

Ratio of masses is

0.45 / 0.09 = 5.0

Here we can see that the mass of the rock is five times the mass of the water so it must be five times denser

Thus, since the density of water is 1000 kg/m^3 , the density of rock is 5000 kg/m^3

You might be interested in
Why is the solar system commonly represented as a scale model?
topjm [15]
The actual size of the Solar system is too big to show without making a much smaller model. If someone wants to see the orientation of the planets a model has to be made so we can see it without flying out too space.
6 0
3 years ago
The product of an object’s mass and velocity is its
Alex Ar [27]
The product of an object's mass and velocity is B.momentum.

<span>♡♡Hope I helped!!! :)♡♡
</span>
8 0
2 years ago
Read 2 more answers
PLEASE HELP<br> 8th grade honors science
lora16 [44]

Both of them are magnets coiled by wires.

1. The wire coiled in the first diagram, the wire is having current, Making the magnetic feild of the magnet more........

2. The wire coiling the  magnet is here not having electric current making the magnetic feild smaller

7 0
2 years ago
Read 2 more answers
1. A runner drops her phone as she is running at a constant speed of 3 miles per hour from point A to point B in a park. Describ
joja [24]

Answer:

Let's define the point A as our zero in the x-axis.

As the phone drops, it keeps the horizontal velocity that it had before, so the horizontal velocity is:

Vx = 3 mi/h.

Now, the only force acting on the phone is the gravitational force that acts in the vertical axis, then we have:

Ay = -g

where g = 9.8 m/s^2

It is dropped, so we do not have a vertical initial velocity, then for the vertical velocity we should integrate over time:

Vy = -g*t

And for the position again, we integrate over time, but now we have an initial position H, that is the height at which the phone is dropped.

Py = -(1/2)*g*t^2 + H

And the horizontal position can be found by integrating over time the horizontal velocity.

Px = (3mi/h)*t

This will be the two equations that describe the motion of the phone, and we can not solve it further because we do not know the initial height of the phone.

But in general, we have a linear equation in the horizontal axis and a quadratic equation with a negative leading coefficient in the vertical axis.

Position(t) = ( (3mi/h)*t,  -(1/2)*g*t^2 + H)

5 0
3 years ago
An organism’s scientific name consists of a. its class name and its family name. b. its kingdom name and its phylum name. c. its
mr Goodwill [35]
An organism scientific name consist of : C. its genus name and its species name
The first part of the name is taken from the Genus and the second part of the name is taken from the species
hope this helps

7 0
3 years ago
Other questions:
  • A block of height 120mm is placed on top of another block with a height of 1.50 m. What is the height of the two blocks together
    9·1 answer
  • The work done to lift a 10kg object to a height of 1m above the ground is
    8·1 answer
  • What is the element with the lowest electronegativity value?
    11·1 answer
  • A tow truck is pulling 25,000 kg van with a tow hook that meets the van at an angle of 30° with the ground. How much force must
    11·1 answer
  • slader A steel bar is 150 mm square and has a hot-rolled finish. It will be used in a fully reversed bending application. Sut fo
    7·1 answer
  • How does a firm calculate its profit? total revenue minus marginal revenue variable cost plus total cost total revenue minus tot
    13·2 answers
  • A proton is accelerated from rest through a potential difference V0 and gains a speed v0. If it were accelerated instead through
    12·1 answer
  • What is similar and different about ionic and covalent bonds?
    15·1 answer
  • How much does a person weigh if it takes 700 kg*m/s to move them 10 m/s<br><br> NEED ASAP
    14·1 answer
  • Question 8 of 10
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!