Physics, 17.07.2019 20:20 allisonchorath6971
Acertain sample of a radioactive material decays at a rate of 213 per second at t = 0. at t =20 minutes, the counting rate has fallen to 123per second. (a)what is the half-life of the sample? (b)what is its decay constant? (c)what will be the decay rate at t =105 minutes?
Answers: 2
Physics, 21.06.2019 14:20
Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?
Answers: 1
Physics, 21.06.2019 22:30
Which expression allows you to determine the mechanical advantage of an inclined plane? a. height of plane / input force b. length of plane / input force c. length of plane / height of plane d. height of plane / length of plane
Answers: 1
Physics, 22.06.2019 11:00
Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide? kg • what must the total momentum of the system be after the train cars collide? kg •
Answers: 2
Physics, 22.06.2019 12:30
An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.
Answers: 2
Acertain sample of a radioactive material decays at a rate of 213 per second at t = 0. at t =20 minu...
Mathematics, 31.05.2021 18:00
Geography, 31.05.2021 18:00
Geography, 31.05.2021 18:00
Mathematics, 31.05.2021 18:10