All categories

3 years ago

Which of the following statements about psychodynamic perspective is not true?

Physics

1 answer:

Free_Kalibri [48]3 years ago

3 0

There are NO true statements on that list of choices.

You might be interested in

The terminal velocity is not dependent on which one of the following properties? the drag coefficient 1 the force of gravity 2 c

ahrayia [7]

<h2>Answer: the falling time</h2>

Explanation:

When a body or object falls, basically two forces act on it:

1. The force of air friction, also called "drag force" $D$ :

$D={C}_{d}\frac{\rho V^{2} }{2}A$ (1)

Where:

$C_ {d}$ is the drag coefficient

$\rho$ is the density of the fluid (air for example)

$V$ is the velocity

$A$ is the transversal area of the object

So, this force is proportional to the transversal area of the falling element and to the square of the velocity.

2. Its weight due to the gravity force $W$ :

$W=m.g$

(2)

Where:

$m$ is the mass of the object

$g$ is the acceleration due gravity

So, at the moment when the drag force equals the gravity force, the object will have its terminal velocity:

$D=W$ (3)

${C}_{d}\frac{\rho V^{2} }{2}A=m.g$ (4)

$V=\sqrt{\frac{2m.g}{\rho A{C}_{d}}}$ (5) This is the terminal velocity

As we can see, there is no "falling time" in this equation.

Therefore, the terminal velocity is not dependent on the falling time.

6 0

3 years ago

A charge +Q is located at the origin and a second charge, +4Q, is at distance (d) on the x-axis.

tatiyna

Answer:

a) x = ⅔ d , b) the charge must be negative, c) Q

Explanation:

a) In this exercise the force is electric between the charges, we are asked that the system of the three charges is in equilibrium, we use Newton's second law. Balance is on the third load that we are placing

∑ F = 0

-F₁₂ + F₂₃ = 0

F₁₂ = F₂₃

let's replace the values

k Q Q / r₁₂² = k Q 4Q / r₂₃²

Q² / r₁₂² = 4 Q² / r₂₃²

suppose charge 3 is placed at point x

r₁₂ = x

r₂₃ = d-x

we substitute

1 / x² = 4 / (d-x) 2

1 / x = 2 / (d-x)

x = 2 (x-d)

x = 2x -2d

3x = 2d

x = ⅔ d

b) The sign of the charge must be negative, to have an attractive charge on the two initial charges

c) Q

5 0

3 years ago

A car drives 125 meters in 5 seconds. calculate the cars speed

masya89 [10]

125/5 = 25 meters per second

3 0

3 years ago

Read 2 more answers

As long the sun will be in the red giant? Question about time period, not when

steposvetlana [31]

It will be a red giant for about 5 billion years

6 0

4 years ago

What is the shortest path that the paper can take to return to Owen's desk? The paper cannot move diagonally.

Vera_Pavlovna [14]

Answer:

to jamal then luis then to eva then back to owen

8 0

3 years ago

Read 2 more answers