Answer:
Explanation:
We are given that
Mass of uranium,
Initial velocity,u=0
Mass of helium nucleus,
Mass of thorium,
Speed of helium nucleus,
We have to find the speed of the thorium nucleus.
According to law of conservation of momentum
Initial momentum=Final momentum
Answer:
and .
Explanation:
From the conservation of the mechanical energy, we have that:
Since the diver is in free fall, her initial velocity is zero. So her initial kinetic energy is also zero. Then, we get:
We will first calculate the final kinetic energy. Solving for K_f, we have:
So the kinetic energy when the diver is 1.00m above the water is 1080J.
Finally, we solve for the final potential energy U_gf:
In words, the gravitational potential energy when she is 1.00m above the water is 539J.
Non ferrous metals such as aluminum, germanium, wood to wood contact, spinning pure distilled water, trees
Answer:
Explanation:
In first case we are interested in one time 6 in six rolls
Thus probability = number of chances required/Total chances
= 1/6
Similarly in the second case probability = 2/12 = 1/6
In the same way in last case probability = 100/600 = 1/6
The probability is the same . Thus all the cases has equal chances