<span>At the center of the sun, fusion converts hydrogen into helium, neutrinos and another thing that I forgot =/</span>
Answer:
The correct option is a
Explanation:
The alpha particle has the lowest penetrating power of the trio of alpha, beta and gamma particles and can be stopped by a sheet of paper and hence cannot penetrate a human skin. Beta particle has a higher penetrating power than alpha particle (some of it penetrates the human skin and some do not) while the gamma particle has the highest penetrating power (with all of it penetrating the human skin).
From the above description, it can be deduced that the alpha particle will stay and interact with the hand (because of its low penetrating power) as the remaining particles move through the skin.
A 500 g ball swings in a vertical circle at the end of a 1.4-m-long string. when the ball is at the bottom of the circle, the tension in the string is 18 n.
Explanation:
It is given that,
Mass of cardinal,
Mass of baseball, 
Both cardinal and baseball have same kinetic energy. We need to find the ratio of the cardinal's magnitude 
of momentum to the magnitude of the baseball's momentum.
Kinetic energy is given by, 
So, 
So, the ratio of cardinal's magnitude of momentum to the magnitude of the baseball's momentum is 53 : 100
