# ((Psychology))An action that benefits others but not ourselves is an example of: A. personal norms. B. altruism. C. facilitation. D. social responsibility.

2 months ago

## Solution 1

Guest #3924
2 months ago

Explanation:

When a person without any selfish motive does something for the benefit of others then it is known as altruism.

For example, a person organizes a food stall every weekend for the poor people of a village.

Therefore, we can conclude that an action that benefits others but not ourselves is an example of altruism.

## Solution 2

Guest #3925
2 months ago
B altruism.
al·tru·ism
ˈaltro͞oˌizəm/Submit
noun
the belief in or practice of disinterested and selfless concern for the well-being of others

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Two men each have a mass of 90 kg. If the gravitational force between them is 8.64 10-8 N, how far apart are they? G = 6.67 × 10-11 N⋅(m/kg)2
Solution 1
Applicable formular:

F = Gm1m2/d^2, where F = gravitational force, m1 & m2 = mass of the two bodies, G = Gravitational constant, d = distance between the bodies.

Substituting;

8.64*10^-8 = (6.67*10^-11*90*90)/d^2
d^2 = (6.67*10^-11*90^2)/(8.64*10^-8)
d = Sqrt [(6.67*10^-11*90^2)/(8.64*10^-8)] = 2.5 m

The two men are 2.5 m apart.
Solution 2

2.5

Explanation:

-a p e x

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I would love to stretch a wire from our house to the Shop so I can 'call' my husband in for meals. The wire could be tightened to have a tension of 240N and a m/L 'weight' of 0.05kg/L. How long would it take for my pulse wave to travel to the Shop (24m) to ring a bell to indicate dinner time.
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Note: I'm not sure what do you mean by "weight 0.05 kg/L". I assume it means the mass per unit of length, so it should be "0.05 kg/m".

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The fundamental frequency in a standing wave is given by

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is the wavelength
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The absolute difference between two frequencies is referred to as beat frequency. That is,
fb = |f2-f1|

In this case, the frequency of unknown fork must be between 240 Hz and 250 Hz. Then,

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### Explanation;

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Solution 2

The answer is friction. The force acting upon the comparative motion of solid surfaces, liquid layers, and material elements sliding in contradiction of each other. When sides in contact move comparative to each other, the friction amid the two surfaces changes kinetic energy into thermal energy; in other words work to heat.

Explanation:

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