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
Dmitriy789 [7]
3 years ago
8

Which of the following is the best definition of the term pseudopsychology?

Physics
1 answer:
blagie [28]3 years ago
3 0
Can you give us the options…?
You might be interested in
Tracking scores from past assignments
svp [43]

The answer is Monitoring progress on edgunity :)

5 0
3 years ago
Read 2 more answers
Problem 24.3 The assembly is made from a steel hemisphere, rho st = 7. 80 Mg/m3 , and an aluminum cylinder, rho al = 2. 70 Mg/m3
AlladinOne [14]

Answer:

0.12 m    

Explanation:

The mass of the steel hemisphere is:

m_h=\rho_s\times \frac{2}{3}\pi r^2\\m_h = 7.8\times 10^3 \times \frac{2}{3}\pi (0.16)^2\\m_h=66.9 kg

Mass of the aluminium cylinder is:

m_c=\rho_a\times \pi r^2 h\\m_c=2.7\times 10^3 \times \pi (0.08)^2(0.18) \\m_c =9.7 kg

mass center of steel hemisphere from the bottom:

z_1=r-3r/8\\z_1=0.16-(3\times 0.16/8) =0.1 m

mass center of aluminium cylinder from the bottom:

z_2=r+h/2 \\z_2=0.16+0.18/2=0.25 m

center of mass is

Z=\frac{m_hz_1+z_2m_c}{m_s+m_c}\\Z=\frac{66.9\times 0.1+9.76\times 0.25}{66.9+9.76} = 0.12 m

3 0
3 years ago
A 40,000 kg subway train is brought to a stop from a speed of 0.700 m/s in 0.250 m by a large spring bumper at the end of its tr
lozanna [386]

Given,

The mass of the train, m=40000 kg

The initial velocity of the train, u=0.700 m/s

The compression in the spring bumper that stopped the train, x=0.250 m

The final velocity of the train, v=0 m/s

From the equation of motion,

v^2-u^2=2ax

Where a is the acceleration of the train.

On substituting the known values,

\begin{gathered} 0-0.700^2=2a\times0.250 \\ \Rightarrow a=\frac{-0.700^2}{2\times0.25} \\ =-0.98\text{ m/s}^2 \end{gathered}

The magnitude of the force applied by the train will be equal to the magnitude of the restoring force of the spring.

Therefore,

\begin{gathered} m|a|=kx \\ \Rightarrow k=\frac{m|a|}{x} \end{gathered}

Where k is the spring constant of the spring.

On substituting the known values,

\begin{gathered} k=\frac{40000\times0.98}{0.250} \\ =156800\text{ N/m} \end{gathered}

Therefore the spring constant of the spring is 156800 N/m

Thus the correct answer is option C.

5 0
1 year ago
A dog runs with an initial speed if 7.5m/s on a waxed floor. it slides to a stop in 15 seconds. What is the acceleration ​
kap26 [50]

Answer:

The answer is -0.5m/s2

Explanation:

I did the test and got it right.

6 0
3 years ago
The spinning of earth on its axis causes the apparent rising and setting of the
rodikova [14]
Sun, moon, and some stars
4 0
3 years ago
Read 2 more answers
Other questions:
  • The name for metric unit of distance
    5·1 answer
  • Is this statement true or false? Kingdom Animalia includes only vertebrate organisms. A. True B. False
    9·2 answers
  • Demagnetize
    11·1 answer
  • A train is travelling at speed of 20m/s. Brakes are applied so as to produce a uniform acceleration of -0.5m/s2. find how far th
    9·1 answer
  • Explain what happens when a ferromagnetic material is made into a permanent magnet.
    8·1 answer
  • An atom of an element with two valence electrons reacts with two atoms of an element with atomic number 17 to form an ionic comp
    11·1 answer
  • What is a simple compositon?
    13·1 answer
  • A truck accelerates on a highway from rest to 216 m/s in 10s. What is the magnitude of acceleration?
    7·1 answer
  • A car weighs 14500 N. What is its mass?
    11·1 answer
  • Two planets X and Y travel counterclockwise in circular orbits about a star, as seen in the figure.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!