Recent content by sciencegeek101

Homework Statement A patient is treated for cancer using radiation from a cobalt-60 unit. Exactly 1.5 years later another patient is treated for the same cancer using the same co-60unit previously used. How much longer would treatment be for the second patient? Homework Equations Decay...

Q represents the total energy released in the process of radium decay. I found this value to be 4.87 MeV in my textbook

Here is the exact question using conservation of momentum and energy, determine the energies in MeV of the alpha particle and the Rn nucleus in the decay Ra-226. You may assume that the Ra nucleus is initially at rest.

I have been asked to determine the energy in MeV of an alpha particle and an Rn nucleus in the decay of Ra-226 using the conservation of energy and momentum. (assume Ra is at rest) Here is what i have done, I am just wondering if i did it properly. Thanks for your help :) Ek=kinetic energy...

Ok thank you, if I were to put this in significant digits what would the answer be? I am not really familiar with sig digs :/

Homework Statement 1. A flash of lightning is seen followed by the sound of the thunder 7.0 s later. If the temperature outside is 15 °C, how far away was the lightning strike? Homework Equations V(sound)= 331m/s+(0.59)(T) D=V(T) The Attempt at a Solution V(sound)=331+(0.59)(15)...

In attempt to determine the temperature of his campfire, a teacher removes 15 g aluminum pop can (Caluminium = 900 J/kg•°C) that has been sitting in the coals from the fire and places it into a bucket that contains 2.0 L of water (Cwater = 4 200 J/kg•°C) at 18 °C; 2.0 L of water has a mass of...

Jamilla throws a stone horizontally off of a pier into the ocean at a velocity of 20 m/s. If the stone is 40.0 m from the edge of the pier when it hits the water, how high above the water's surface was the stone when Jamilla threw it? Vf= 20m/s Vi= 0m/s a=9.8m/s2 Δd= 40m Δd=...