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
Mekhanik [1.2K]
3 years ago
14

An object has a mass of 50.0 g and a volume of 10.5 cm3. What is the object's density?

Physics
1 answer:
seraphim [82]3 years ago
4 0
Volume=mass/density

volume=455.6/19.3

volume=23.6 mL

You might be interested in
The internal energy of material is determined by
Mnenie [13.5K]
The combined amount of kinetic and potential energy of its molecules
6 0
3 years ago
A frictionless piston-cylinder device contains 10 kg of superheated vapor at 550 kPa and 340oC. Steam is then cooled at constant
Alla [95]

Answer:

a) the work (W) done during the process is -2043.25 kJ

b) the work (W) done during the process is -2418.96 kJ

Explanation:

Given the data in the question;

mass of water vapor m = 10 kg

initial pressure P₁ = 550 kPa

Initial temperature T₁ = 340 °C

steam cooled at constant pressure until 60 percent of it, by mass, condenses; x = 100% - 60% = 40% = 0.4

from superheated steam table

specific volume v₁ = 0.5092 m³/kg

so the properties of steam at p₂ = 550 kPa, and dryness fraction

x = 0.4

specific volume v₂ = v_f + xv_{fg

v₂ = 0.001097 + 0.4( 0.34261 - 0.001097 )

v₂ = 0.1377 m³/kg

Now, work done during the process;

W = mP₁( v₂ - v₁ )

W = 10 × 550( 0.1377 - 0.5092 )

W = 5500 × -0.3715

W = -2043.25 kJ

Therefore, the work (W) done during the process is -2043.25 kJ

( The negative, indicates work is done on the system )

b)

What would the work done be if steam were cooled at constant pressure until 80 percent of it, by mass, condenses

x₂ = 100% - 80% = 20% = 0.2

specific volume v₂ = v_f + x₂v_{fg

v₂ = 0.001097 + 0.2( 0.34261 - 0.001097 )

v₂ = 0.06939 m³/kg

Now, work done during the process will be;

W = mP₁( v₂ - v₁ )

W = 10 × 550( 0.06939 - 0.5092 )

W = 5500 × -0.43981

W = -2418.96 kJ

Therefore, the work (W) done during the process is -2418.96 kJ

3 0
3 years ago
A 65 N boy sits on a sled weighing 52 N on a horizontal surface. The coefficient of friction between the sled and the snow is 0.
pogonyaev

Answer:

1.40 N

Explanation:

The magnitude of the frictional force is given by:

F=\mu N

where

\mu is the coefficient of friction

N is the magnitude of the normal reaction

The coefficient of friction for this problem is \mu=0.012. The magnitude of the normal reaction is equal to the combined weight of the boy and the sled, because the surface is horizontal, so

N=65 N+52 N=117 N

Therefore, the frictional force is

F=\mu N=(0.012)(117 N)=1.40 N

3 0
3 years ago
What is 1.3 for PE=mgh and for KE=1(m)v^2 and E=PE+KE and V​
emmainna [20.7K]

Answer:

1.3 is equal to m times v to the second  times PK, meaning the answer to your question is 3.3 K

Explanation:

Have a gday!

8 0
2 years ago
Ddxxxxxxxdxxxxxxxvvgvvgggghhhh
balandron [24]

Answer:

huh? thanks for points

7 0
3 years ago
Read 2 more answers
Other questions:
  • If millikan was measuring the charge on an oil droplet with 3 negatively charged electrons on it, what charge would he have meas
    5·1 answer
  • Resistors labeled 100 Ω have true resistances that are between 80 Ω and 120 Ω. Let X be the mass of a randomly chosen resistor.
    15·1 answer
  • The set of points in a plane that are equidistant from a given point form a ____.
    6·2 answers
  • An inductor has inductance of 0.260 H and carries a current that is decreasing at a uniform rate of 18.0 mA/s.
    12·1 answer
  • Basic of Archimedes's principle of how fluid can make body to float and sink.​
    10·1 answer
  • The components of vector A are:
    12·1 answer
  • In the 1920s what did Edmund hubble notice about the galaxies
    11·1 answer
  • A chef, wanting to create a device to better cover food in olive oil creates a sprayer that charges the oil positively before sp
    5·1 answer
  • Find the acceleration of a 2 kg block with a force of 4 N
    14·1 answer
  • 9) 25cm³ of a liquid x of density 1.2g/cm³ is mixed with liquid of volume 30 cm³ and 0.9g/cm³ without change in volume. Calculat
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!