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sergiy2304 [10]
2 years ago
13

I dont know what pfp to put on today so I'm asking u guys....

Physics
1 answer:
Mandarinka [93]2 years ago
5 0

Answer:

i think number 2 should be your pfp

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What are the basic ethical guidelines for psychological research?
Sergeeva-Olga [200]
Five principles for research ethics

Discuss intellectual property frankly

Be conscious of multiple roles

Follow informed-consent rules.

Respect confidentiality and privacy.

Tap into ethics resources.
3 0
3 years ago
If a typical smelt weighs 225 g, what is the total mass of pcbs in a smelt in the great lakes? If a typical smelt weighs 225 g,
photoshop1234 [79]

Answer;

= 2.34 x 10^-4 g pcbs

Explanation;

-A typical smelt has 1.04 ppm of PCB is great lakes.

Therefore;

The amount of PCB in a smelt in great leak can be calculated by multiplying the mass of smelt by the pcbs present in a smelt

= 225 g * ( 1.04/100000)

= 2.34 x10^-4 g pcbs

7 0
3 years ago
Give an example of the of conservation of momentum
seropon [69]
Refraction is the bending of a wave when it enters a medium where its speed is different. This phenomenon is explained by the conservation of energy and conservation of momentum. 

Law of Conservation of energy states the total energy of an isolated system remains constant.

law of conservation of momentum states that in a closed system the total momentum is constant.

<span>In refraction, when a medium changes, the phase velocity also changes but its frequency does not; it remains constant. </span>
3 0
2 years ago
List how many significant figures the numbers contain. A. 205 cm. B. .00004 cm. C. 20 cm. D. 20. Cm.
stiv31 [10]
A. 205 cm
   This has 3 significant figures: 2,0 and 5.

B. 0.00004 cm
   This has 1 significant figure: 4

C. 20 cm
   This has 2 significant figures: 2 and 0.

D. 20. cm
    This has 2 significant figures: 2 and 0 
7 0
3 years ago
) A satellite of mass m has an orbital period T when it is in a circular orbit of radius R around the earth. If the satellite in
Mrrafil [7]

Answer:

A) T.

Explanation:

Kepler's third law states that the orbital period (T) of a satellite is related with the radius (R) and the mass of the object (M) it orbits:

T=\frac{2\pi R^{\frac{3}{2}}}{\sqrt{GM}}  

So the orbital period is independent of the mass of the satellite, that means no matter the mass every satellite at a radius R around the earth have an orbital period A.

4 0
3 years ago
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