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Tamiku [17]
3 years ago
9

All of the following were barriers to minority participation in early psychology except

Physics
2 answers:
Elza [17]3 years ago
8 0

The correct answer is A. just took the quiz.

Masja [62]3 years ago
4 0
<span>All of the following were barriers to minority participation in early psychology except school desegregation. The correct option among all the options that are given in the question is the first option or option "A". I hope that this is the answer that you were looking for and the answer has come to your great help.</span>
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The asteroid belt is a region between Mars and Jupiter that contains a multitude of large rocks and planetary fragments called a
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The best estimate of the orbital period of a typical asteroid is 9.0 earth years. 
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Explain the following (using the concepts of moment, center of gravity and stability.) a) Racing cars are low, with wide wheels.
LUCKY_DIMON [66]

Answer:

b

Explanation:

3 0
3 years ago
A scientist would use a balance to measure
GrogVix [38]
Answer is B

Hope it Helps!

7 0
4 years ago
Read 2 more answers
Which of the following describes one of the main features of wave-particle duality?
steposvetlana [31]
<h2>Answer:  as mass increases, the wave nature of matter is less easy to observe.</h2>

At the beginning of the 20th century the French physicist Louis De Broglie proposed the existence of matter waves, that is to say that <u>all matter has a wave associated with it.</u>

In this sense, the de Broglie wavelength \lambda is given by the following formula:

\lambda=\frac{h}{p}   (1)

Where:

h is the Planck constant

p is the momentum of the atom, which is given by:

p=m.v (2)

Where:

m is the mass

v is the velocity

Substituting (2) in (1):

\lambda=\frac{h}{m.v}[\tex]   (3)As we can see, if we increase the mass, the wavelength decreases (because [tex]\lambda is inversely proportional to m).

Therefore, if the wavelength decreases the wave nature of matter is less easy to observe.

The other options are incorrect because:

a) as v increases \lambda decreases and the particle nature matter becomes more evident

b) as p decreases \lambda increases and the wave nature matter becomes more evident

c) There is also a relation between the wavelength and the energy E:

\lambda=\frac{hc}{E}

So, as energy increases, the particle nature matter becomes more evident and the wave nature of matter becomes harder to observe

8 0
3 years ago
A 4-foot spring measures 8 feet long after a mass weighing 8 pounds is attached to it. The medium through which the mass moves o
aniked [119]

Correct question is;

A 4-foot spring measures 8 feet long after a mass weighing 8 pounds is attached to it. The medium through which the mass moves offers a damping force numerically equal to √2 times the instantaneous velocity. Find the equation of motion if the mass is initially released from the equilibrium position with a downward velocity of 7 ft/s. (Use g = 32 ft/s²)

Answer:

x(t) = 7te^(-2t√2)

Explanation:

We are given;

Weight; W = 8 lbs

mass; m = W/g

g = 32 ft/s²

Thus;

m = 8/32

m = ¼ slugs

From Newton's second law we can write the equation as;

m(d²x/dt²) = -kx - β(dx/dt)

Rearranging this, we have;

(d²x/dt²) + (β/m)(dx/dt) + (k/m)x = 0

Where;

β is damping constant = √2

k is spring constant = W/s

Where s = 8ft - 4ft = 4ft

k = 8/4

k = 2

Thus,we now have;

(d²x/dt²) + (√2/(¼))(dx/dt) + (2/(¼))x = 0

>> (d²x/dt²) + (4√2)dx/dt + 8x = 0

The auxiliary equation of this is;

m² + (4√2)m + 8 = 0

Using quadratic formula, we have;

m1 = m2 = -2√2

The general solution will be gotten from;

x_t = c1•e^(mt) + c2•t•e^(mt)

Plugging in the relevant values gives;

x_t = c1•e^(mt) + c2•t•e^(mt)

At initial condition of t = 0, x_t = 0 and thus; c1 = 0

Also at initial condition of t = 0, x'(0) = 7 and thus;

Since c1 = 0, then c2 = 7

Thus,equation of motion is;

x(t) = 7te^(-2t√2)

8 0
3 years ago
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