That's right, the correct answer is
<span>A) The isotopes have a long half-life and only remain radioactive for a long time period
The half life of an isotope is the time it takes for the amount of the sample to reduce to half of its initial value. If an isotope has a long half-life, it means it takes a long time to reduce down to a significant level, so it will remain radioactive for a long time period.</span>
Answer:
C. An area with a large river and significant elevation changes
Explanation:
"The best location for a hydroelectric station should be along the path of a river. It should be at least at the river canyon or at the place where the river narrows. This enables the collection of the water or the diversion of the river."
Hope this helps
Energy
Waves carry energy as they travel.
Answer:
Hello There!!
Explanation:
You use the formula:K.E. = 1/2 m v2.
kinetic energy=1 / 2 × 10 × 5 ²(the power of 2 means you multiply the number by itself)
half of 10 is 5 so you do 5×5².
kinetic energy=5×5²=(5×5=25) so 25×5=125 Joules.
hope this helps,have a great day!!
~Pinky~
