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Savatey [412]
3 years ago
15

An isotope of an element will be radioactive if it has an unstable ratio of____and_____

Physics
1 answer:
sammy [17]3 years ago
5 0
Neutrons and protons
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Table C: Average Speeds for Lower Racetrack
Blababa [14]

Answer:

Centripetal Acceleration = v^2/r

= (circumference/time)^2/r

= (2*pi*r/t)²)/r

= ((2³.14*50/14.3)²)/50

= 9.64 m/s²

brainlist?

Explanation:

5 0
3 years ago
A 60.0-kg skier with an initial speed of 12.0 m/s coasts up a 2.50-mhigh rise and angle is 35 degrees.Find her final speed at th
Shalnov [3]
Wt. = Fg = m*g = 60kg * 9.8N/kg=588 N.= 
<span>Wt. of skier. </span>

<span>Fp=588*sin35 = 337 N.=Force parallel to </span>
<span>incline. </span>
<span>Fv = 588*cos35 = 482 N. = Force perpendicular to incline. </span>

<span>Fk = u*Fv = 0.08 * 482 = 38.5 N. = Force </span>
<span>of kinetic friction. </span>
<span>d =h/sinA = 2.5/sin35 = 4.36 m. </span>

<span>Ek + Ep = Ekmax - Fk*d </span>
<span>Ek = Ekmax-Ep-Fk*d </span>
<span>Ek=0.5*60*12^2-588*2.5-38.5*4.36=2682 J. </span>
<span>Ek = 0.5m*V^2 = 2682 J. </span>
<span>30*V^2 = 2682 </span>
<span>V^2 = 89.4 </span>
<span>V = 9.5 m/s = Final velocity.</span>
4 0
3 years ago
Read 2 more answers
A car travels around a curve. What can you say about the centripetal force if the velocity is tripled?
Lesechka [4]

Answer:

F = M a = M v^2 / R

If v is increased by three the force will be increased by nine,

C) is correct

4 0
2 years ago
One of the basic rules of science is
adoni [48]
Geocentric means earth centered
So answer is C - the earth in no longer believed to be the center of the solar system
6 0
2 years ago
When looking for a mathematical relationship between two variables what graph do you use?
Mnenie [13.5K]

I believe the correct answer from the choices listed above is option A. When looking for a mathematical relationship between two variables, use a line graph. It relates how one variable affects the other by a linear relationship.

Hope this helps.



8 0
3 years ago
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