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labwork [276]
3 years ago
10

For a study to accurately reflect a target population behavior, it must use __________ measures.

Physics
2 answers:
kari74 [83]3 years ago
4 0

Answer: a. both reliable and valid

The parameters used to describe a particular trait or characteristic in a human behavior should be reliable and valid, in order to determine the response of the population with respect to a particular stimulus.

ArbitrLikvidat [17]3 years ago
3 0

Answer:

A on edge

Explanation:

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Ultraviolet light from a distant star is traveling at 3.0 × 108 m/s. How long will it take for the light to reach Earth if it mu
Deffense [45]

Answer : Time taken for the light to reach earth is 3.7\times 10^4\ Hours

Explanation :

Given that,

Speed of Ultraviolet light, v = 3\times 10^8\ m/s

Distance covered by the light, d = 4\times 10^{13}\ km=4\times 10^{16}\ km

We have to find the time taken (t) by the light to reach on the surface of earth.

t=\dfrac{d}{v}

t=\dfrac{4\times 10^{16}\ km}{3\times 10^8\ m/s}

t = 133333333.333 seconds

t=37037.03

or

t=3.7\times 10^4\ Hours

Hence, this is the required solution.

7 0
4 years ago
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What is de Broglie's hypothesis ? Make sure to be specific (qualitative and quantitative)
victus00 [196]

Answer and Explanation:

DE BROGLIE 'S HYPOTHESIS :

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3 0
3 years ago
When you whisper, you produce a 10-dB sound.
lora16 [44]
All you would do is for a, 10 times 2 is 20 so it would be 20-dB
For b, 10 times 4 is 40 so it would be 40-dB
For c, 10 times 8 is 80 so it would be 80-dB
3 0
4 years ago
Which of the following atoms is least likely to form chemical bonds with other atoms
wariber [46]
The atom that would least likely form chemical bonds with other atoms would be C. A neon containing 4 valence electrons, this is because neon itself is an inert gas, it would not necessarily react as it already possess the maximum number of electrons needed to achieve stability and have a full octet, even if it is forced to obtain 4 valence electrons it would not react with other atoms.
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3 years ago
What are Sir Issac Newton's three laws of motion?
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The first law is that every object stay at rest or stay in uniform motion in a straight line until it is forced to change its state by the action of an external force. This law is called law of inertia.

The second law is that the acceleration of an object is dependent upon two variables. the net force acting upon the object and the mass of the object.  F= ma or force is equal to mass times acceleration. This law is known as the law of force and acceleration.  

The third law is that for every action there is an equal and opposite reaction.  every interaction there is a pair of forces acting on the two interacting objects. the size of forces on the first object equals the size of the force on the second object. 

Hope this helps :) 

can you please make this the brainliest answer it would really help . Thanks
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3 years ago
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