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
kozerog [31]
2 years ago
15

We've discussed elevators that are raised with cables, but many elevators use pistons. A pump provides fluid at very high pressu

re to the piston; the resulting force on the piston raises the elevator and passengers. For a typical piston elevator, the mass of the elevator and passengers is 2000 kg and the radius of the piston is a surprisingly small 4. 2 cm. The elevator begins to move upward, accelerating at 0. 80 m/s2. What is the absolute pressure in the piston?
Physics
1 answer:
WINSTONCH [101]2 years ago
3 0

p =  \frac{f}{s}

f = ma = 2000 \times 0.8 = 1600

s = \pi \: r {}^{2}  = 3.14 \times 4. {2}^{2}  \times 10 {}^{ - 4}  = 55.42 \times 10 {}^{ - 4}

p =  \frac{1600}{55.42 \times 10 {}^{ - 4} }  = 288 \: 704 \: pascal

You might be interested in
Which of of the following is a physical change ice melting into a puddle of water,Leaves changing color in fall, Or baking a cak
Tom [10]

Answer:

ice melting

Explanation:

Because once it melts you can change it back to ice.

4 0
3 years ago
A scientist finds an unusual object and decides to study it. Which observation indicates that it is a living thing that is multi
Anni [7]
B. It has membrane-bound organelles.

This is the most logical choice. For example, rocks can be found in water AND possess uneven shapes.
6 0
3 years ago
Read 2 more answers
A 10 g bullet is fired into, and embeds itself in, a 2 kg block attached to a spring with a force constant of 19.6 n/m and whose
dmitriy555 [2]

Answer:

x=0.478\ m is the compression in the spring

Explanation:

Given:

  • mass of the bullet, m=10\ g=0.01\ kg
  • mass of block, M=2\ kg
  • stiffness constant of the spring, k=19.6\ N.m^{-1}
  • initial velocity of the spring just before it hits the block, u=300\ m.s^{-1}

<u>Now since the bullet-mass gets embed into the block, we apply the conservation of momentum as:</u>

m.u=(M+m).v

0.01\times 300=(2+0.01)\times v

v=1.4925\ m.s^{-1}

Now this kinetic energy of the combined mass gets converted into potential energy of the spring.

\rm Kinetic\ energy=Spring\ potential\ energy

\frac{1}{2} (M+m).v^2=\frac{1}{2} k.x^2

\frac{1}{2} \times (2+0.01)\times 1.4925^2=\frac{1}{2} \times 19.6\times x^2

x=0.478\ m is the compression in the spring

4 0
3 years ago
Read 2 more answers
What is the velocity of a plane that traveld 3000 miles from new york to california in 5.0 hours
JulijaS [17]
The Velocity is 666.67 mph
7 0
2 years ago
A car is moving with an initial relocity of
MA_775_DIABLO [31]

Answer:

The final acceleration of the car, v = 70 m/s

Explanation:

Given,

The initial velocity of the car, u = 20 m/s

The acceleration of the car, a = 10 m/s²

The time period of travel, t = 5 s

Using the I equations of motion

                     v = u + at

                        = 20 + 10(5)

                        = 20 + 50

                        = 70 m/s

Hence, the final acceleration of the car, v = 70 m/s

4 0
3 years ago
Other questions:
  • Why does life hate me?
    14·2 answers
  • Arnold Schwarzenegger is moving out of his California mansion. He pushes a box of books on the floor with a force of 50 N to the
    7·1 answer
  • Two cars collide on the parkway. The drivers are following too closely and the driver in the front slows because of traffic to a
    7·1 answer
  • How are magnetic field lines like electric field lines?
    6·2 answers
  • If you kick a ball and the ball accelerates through the air, the forces involved must be
    10·2 answers
  • Which point refers to the epicenter of an earthquake?
    8·2 answers
  • Which type of radioactive decay results in no change in mass number and atomic number for the starting nucleus?
    8·1 answer
  • A phonograph turntable rotating at 33 1 3 rev/min slows down and stops in 1.98 min. (Assume the turntable initially rotates in t
    8·1 answer
  • Thanks+ BRAINLIST only for correct answers
    15·2 answers
  • a fan is rotating at 90 rpm.It is then switched off. It stops after 21 revolutions. calculate the time taken by the frictional t
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!