Answer:Half-life is the amount of time it takes for the initial mass of the isotope to decompose, by half, into other lighter atoms.
Explanation:Different radioactive isotopes have different half-lives. For example, the element technetium-99m has a half life of 6 hours. This means that is 100 kg of the element is left to decay, in 6 hours, 50kg of the mass will have changed into other elements/atoms. The half-life of uranium-238 is 4.5 billion years while that of polonium-216 is only 0.145 seconds.
Answer:
By having specialized instruments onboard NASA spacecrat, they do this to detect how they behave
Explanation:
I really hope this is right have a stellar day.
Answer:
their weight difference
Explanation:
weight adds to kinetic energy. a heavier object will have a higher kinetic energy because the extra weight will slowly increase or decrease the velocity depending on if it's being sent down a decline or inclined plane
Answer:8540 kg-g/s
Explanation:
Given
mass of blue car
velocity of blue car
mass of the truck
speed of truck
After collision they stick and lock together
Let v be the velocity of combined system at angle \theta from vertical
Conserving momentum in east direction
------1
Conserving Momentum in Y direction
-------2
squaring and then adding 1 & 2 we get
v=10.95 m/s
initial momentum of car