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
scZoUnD [109]
3 years ago
11

Masses A and B rest on very light pistons that enclose a fluid.There is no friction between the pistons and the cylinders they f

it inside. Block B has a bigger volume than block A. Which of the following is true?
A)Density of B is the same as Density of A


B)Density of B is greater than Density of A


C)Density of B is smaller than Density of A


D)Not enough information

Physics
1 answer:
RSB [31]3 years ago
3 0

Answer:

D)Not enough information

Explanation:

According to Pascal's principle, the pressure exerted on the two pistons is equal:

p_A = p_B

Pressure is given by the ratio between force F and area A, so we can write

\frac{F_A}{A_A}=\frac{F_B}{A_B}

The force exerted on each piston is just equal to the weight of the corresponding mass: F=W=mg, where m is the mass and g is the gravitational acceleration. So the equation becomes

\frac{m_A g}{A_A}=\frac{m_B g}{A_B}

Now we can rewrite the mass as the product of volume, V, times density, d:

\frac{V_A d_A g}{A_A}=\frac{V_B d_B g}{A_B}

We also know that A_B = 2.0 m^2\\A_A = 1.0 m^2

So we can further re-arrange the equation (and simplify g as well):

\frac{V_A d_A}{1}=\frac{V_B d_B}{2}

\frac{d_A}{d_B}=\frac{V_B}{2V_A}

We are also told that block B has bigger volume than block A: V_B > V_A. However, this information is not enough to allow us to say if the fraction on the right is greater than 1 or smaller than 1: therefore, we cannot conclude anything about the densities of the two objects.

You might be interested in
A motorcycle starting from rest covers 200 metre distance in 6 second. Calculate final velocity and acceleration of the motorcyc
QveST [7]

Answer:

Explanation:I don't say you must have to mark my ans as brainliest but if you think it has really helped u plz don't forget to thank me....

3 0
3 years ago
Asap? This heating curve is produced when a certain substance is heated.
MaRussiya [10]

Answer: the particles are more orderly in region 1

Explanation: region 1 is when the substance is a solid and as it is heated the particles move further apart and have more kinetic energy.

5 0
2 years ago
Read 2 more answers
Suppose a constant net force of 345 N is applied to slide a heavy stationary couch across the
ira [324]

Answer:

517.5Ns

Explanation:

F=(MV - MU)/t

where MV - MU is the change in momentum,

therefore, MV - MU = Ft

= 345 X 1.

= 517.5Ns

4 0
2 years ago
What type of energy does a soccer player transfer to the ball?
MrMuchimi
In soccer, the ball is potential energy. When you kick the ball, it becomes kinetic energy.
8 0
3 years ago
Read 2 more answers
Which conversion can take place in a transformer
Naddik [55]

Answer:

D. A lower Voltage into a higher

5 0
3 years ago
Other questions:
  • You design toys for a toy company. Your boss wants you to hook up the lights in the toy car you are working on in the cheapest w
    9·2 answers
  • Which type of rock is formed from cooling molten rock?
    9·1 answer
  • You need to measure the length of your driveway. Which measuring tool would produce accurate results that you would expect to be
    6·2 answers
  • A kilometer is a measure of an object’s
    13·1 answer
  • Substance X is placed in a container with substance Y.
    7·1 answer
  • A uniform metal rod, with a mass of 2.6 kg and a length of 1.5 m, is attached to a wall by a hinge at its base. A horizontal wir
    10·1 answer
  • 50 N of force is exerted on a crate. It accelerates at a rate of 1.2 m/s/s. Calculate its mass
    7·1 answer
  • Which of the following can provide direct current?
    10·1 answer
  • Which method of testing substances is a sure way to identify a chemical reaction?
    6·1 answer
  • A visitor at a Michigan lighthouse is trying to measure the height of the lighthouse. She has a big spool of string, but she doe
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!