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
bija089 [108]
3 years ago
11

An 81.5-kg man stands on a horizontal surface.

Physics
1 answer:
OLga [1]3 years ago
7 0

Answer:

a)V= 0.0827 m³

b)P=181.11 x 10²  N/m²

Explanation:

Given that

m = 81.5 kg

Density ,ρ = 985 kg/m³

As we know that

Mass = Volume x Density

81.5 = V x 985

V= 0.0827 m³

The force exerted by weight = m g

 F= m g= 81.5 x 10 = 815 N      ( Take ,g= 10 m/s²)

Area ,A= 4.5 x 10⁻² m²

The Pressure P

P=\dfrac{F}{A}

P = \dfrac{815}{4.5\times 10^{-2}}\ N/m^2

P=181.11 x 10²  N/m²

You might be interested in
Classify the statement below as either Speed or Velocity?
Yuki888 [10]

Answer:

Hello There!

It is Speed.

\Large\bold\red{Reason}

Because in the question it is said that at which speed car is travelling.

Speed is a scalar quantity.

If it is velocity then first know this that it is a vector quantity.

It must include both magnitude and direction.

If it is velocity then it would be 40 mph east or west or north or south.

<h2>I hope it is helpful to you...</h2><h3>Cheers!_____________</h3>
4 0
2 years ago
This element is added to table salt to prevent the development of goiter
Gemiola [76]
Iodine is added to salt to prevent goiter 
5 0
3 years ago
Read 2 more answers
How does net force affect the direction of motion?
spayn [35]

Answer:

An unbalanced force (net force) acting on an object changes its speed and/or direction of motion. While the net force may not be in the same direction which the object is moving, it is always in the direction that the object is accelerating.

Explanation:

6 0
2 years ago
Read 2 more answers
Taylor drives 5 miles in 10 minutes. She stops at a light for 2 minutes. She then travels another 10 miles in 8 minutes. What wa
attashe74 [19]

45 miles per hour is the answer to the probably.

5 0
2 years ago
Suppose you are at the center of a large freely-rotating horizontal turntable in a carnival funhouse. As you crawl toward the ed
I am Lyosha [343]

Answer:

c. remains the same, but the RPMs decrease.

Explanation:

Because there aren't external torques on the system composed by the person and the turntable it follows that total angular momentum (I) is conserved, that means the total angular momentum is a constant:

\overrightarrow{L}=constant

The total angular momentum is the sum of the individual angular momenta, in our case we should sum the angular momentum of the turntable and the angular momentum of a point mass respect the center of the turntable (the person)

\overrightarrow{L_{turnatble}}+\overrightarrow{L_{person}}=constant (1)

The angular momentum of the turntable is:

\overrightarrow{L_{turnatble}}=I\overrightarrow{\omega} (2)

with I the moment of inertia and ω the angular velocity.

The angular momentum of the person respects the center of the turntable is:

\overrightarrow{L_{person}}=\overrightarrow{r}\times m\overrightarrow{v} (3)

with r the position of the person respects the center of the turntable, m the mass of the person and v the linear velocity

Using the fact v=\omega r:

\overrightarrow{L_{person}}=\overrightarrow{r}\times rm\overrightarrow{\omega}(3)

By (3) and (2) on (1) and working only the magnitudes (it's all that we need for this problem):

I\omega+r^{2}m\omega=constant

\omega(I+r^{2}m)=constant

Because the equality should be maintained, if we increase the distance between the person and the center of the turntable (r), the angular velocity should decrease to maintain the same constant value because I and m are constants, so the RPM's (unit of angular velocity) are going to decrease.

4 0
3 years ago
Other questions:
  • A small rubber wheel drives the rotation of a larger pottery wheel by running along its edge. The small wheel radius is 1.2 cm,
    7·1 answer
  • Which type of friction keeps a mound of rocks from falling away from each other
    6·2 answers
  • A boy slides a book across the floor, using a force of 5 N over a distance of 2
    7·1 answer
  • The difference between speed and velocity is that velocity includes.
    7·2 answers
  • Two vectors A and B are directed such that there is an angle θ between them. show answer Incorrect Answer Which of the following
    15·1 answer
  • A particle of mass m moves along the x axis under the influence of a force given by F(x)=(3+2x)i. It starts from rest from the p
    9·1 answer
  • Which of the following statements about this experiment is FALSE? Before each trial one should reshape the bob into something li
    9·1 answer
  • Summarize why people were unsuccessful over 1,000 years ago when they tried to transform lead into gold. What process would they
    9·1 answer
  • The 2nd maximum of a double slit diffraction pattern makes an angle 20 degrees when a wavelength of 600 nm is used. What is the
    10·1 answer
  • Why should we not use nuclear energy
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!