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Miss H
How much mass was converted to energy when this took place?
The atomic bomb that was dropped on Nagasaki in 1945 killed
140,000 people, helping to end World War II on the next day. It
released energy equivalent to that of 20,000 tons of TNT
explosive. How much mass was converted to energy when this took
place? (1000 tons of TNT = 4.3 × 1012 J) Incidentally, modern H-
bombs have energy yields 1000 times as much!
3 AnswersPhysics1 decade agoThe half-life of carbon-14, a beta emitter, is 5730 years. Estimate the age of the artifact.?
The radioactivity due to carbon-14 measured in a piece of a wooden casket from an ancient burial site was found to produce 20 counts per minute from a given sample, whereas the same amount of carbon from a piece of living wood produced 160 counts per minute. The half-life of carbon-14, a beta emitter, is 5730 years. Thus we would estimate the age of the artifact to be what?
2 AnswersPhysics1 decade agoThe half-life of carbon-14, a beta emitter, is 5730 years. Estimate the age of the artifact.?
The radioactivity due to carbon-14 measured in a piece of a wooden casket from an ancient burial site was found to produce 20 counts per minute from a given sample, whereas the same amount of carbon from a piece of living wood produced 160 counts per minute. The half-life of carbon-14, a beta emitter, is 5730 years. Thus we would estimate the age of the artifact to be what?
1 AnswerPhysics1 decade agoHow much energy (in MeV) is released if carbon-14...?
A carbon-14 nucleus decays to a nitrogen-14 nucleus by beta
decay. How much energy (in MeV) is released if carbon-14 has a
mass of 14.003242 u and nitrogen-14 has a mass of 14.003074 u?
3 AnswersPhysics1 decade agoWhat is the speed of a proton if its mass is twice its rest mass?
3 AnswersPhysics1 decade agoWhat distance does the space ship travel according to a passenger on the ship?
closest star to our solar system is Alpha Centauri, which is
4.30 light years away. A spaceship with a constant speed of 0.8c
relative to the Earth travels toward the star. What distance does
the space ship travel according to a passenger on the ship?
3 AnswersPhysics1 decade agoA set of twins, Andrea and Courtney, are initially 10 years old.?
While Courtney remains on Earth, Andrea rides on a space ship
which travels away from Earth at a speed of 0.6c for five years
(as measured by Courtney), then turns around and comes back at
0.6c. When Andrea returns, Courtney is 20 years old. How old is
Andrea upon her return?
7 AnswersPhysics1 decade agoShould I stop communicating with my mom and my sister?
For years my mom and sister have been teaming up against me. I am 23 and married with a one year old son. My mom and sister are always asking me to do things for them and I always say yes. They take advantage of my kindness and won't do anything for me unless I pay them. They constantly make me mad and make me feel used. I am just starting my life with my husband and sick of arguing and being used by them. Should I cut them off?
2 AnswersFamily1 decade agotwo numbers that add up to 23 and have a difference of 4?
math word problem for little sis. I forgot the equation.
21 AnswersMathematics1 decade agoI live in a small apartment . Where is a good location for my son's first birthday?
I don't want to spend too much money but I want everyone to be comfortable and make the occasion very memorable.
9 AnswersNewborn & Baby1 decade ago