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alexira [117]
2 years ago
11

In his psychology class, Professor Adams said that fear of spiders and snakes are common in humans, but fear of automobiles is n

ot. This is true even though far more people are killed by automobiles than by spiders or snakes. According to the professor, the reason for this is that across the 200,000 years that humans have been on the planet, those who feared and avoided poisonous spiders and snakes were more likely to have children and raise them to an age where the children had kids of their own. This example illustrates which perspective of psychology? a. biopsychology b. behavioral c. evolutionary d. developmental
Physics
1 answer:
Svetradugi [14.3K]2 years ago
5 0

Answer:

Evolutionary

Explanation:

Because our ancestors were afraid of these poisonous spiders and snakes which lead to them to telling their kids of these dangers. Their kids will fear them without even encountering any and this will also be passed on to their future generations.

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mars1129 [50]

Answer:

The train travelled 10hours.

Explanation:

Using speed= distance/time ...eq1

Let the time taken by train to cover the journey be t.

Let the speed of train be s

Time= distance/speed ...eq2

Time t =600/s ...eq3

The train is delayed for 1 1/2 hours=3/2 hours

Train increased by 15km/hr.

Train travelled 1/4 of 600k.= 150km.

Speed increased by s + 15 to cover the remaining 450km

t = 150/s + 400/(s + 15) + 3/2 ..eq4

Equating eq3 and 4

600/s= 150/s + 460/(s + 15) + 3/2

450/s = 3/2 + 450/(s + 15)

3s^2 + 45s -13500=0

Solving the quadratic equation

S= -45 +-sqrt(45^2-4(3×13500)/2×3

S= 60 , -75

Hence speed of train is 60km/hr

Using eq 2 distance/speed=time

600/60=10

t= 10hours

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3 years ago
What are 3 parts of daltons atomic theory ?
Crank
1) all matter is made of atoms , atoms are indivisible and indestructible 2) compounds are formed by a combination of two or more different kinds of atoms 3) a chemical reaction is an arrangement of atoms
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3 years ago
If the white car experiences a change in momentum equal to 105,000 kg*m/s and is in contact with the red car for 5 seconds befor
larisa86 [58]

Answer:

21000 N

Explanation:

From the question given above, the following data were obtained:

Change in momentum = 105000 kg.m/s

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Force =?

Force is related to momentum and time according to the following formula:

Force = Change in momentum / time

With the above formula, we can calculate the force the white car experience during the collision. This can be obtained as illustrated below:

Change in momentum = 105000 kg.m/s

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Thus, the white car experience a force of 21000 N during the collision.

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To solve this problem it is necessary to use the conservation equations of both kinetic, rotational and potential energy.

By definition we know that

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In this way

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Where,

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