Answer:
The amount of phosphorus-32 left after 100.1 days is <u>9.3 g</u>.
Step-by-step explanation:
Given:
Initial amount of Phosphorus-32 is, 
Time period of decay is, 
Half life of the block is, 
Now, final amount left is, 
We know that, the decay equation for a radioactive material is given as:
The value of the decay constant is given as:
Now, plug in all the given values and calculate 'N'. This gives,
Therefore, the amount of phosphorus-32 left after 100.1 days is 9.3 g
Answer:
Answer: l = 82.5
Step-by-step explanation:
11/2 x 15 = 82.5.
Answer:
B. 1/4
Step-by-step explanation:
We can use the distance = rate ⋅ time formula to find the distance Lee traveled. The formula d = rt looks like this when we plug in the numbers from the problem. The unknown distance is represented with the variable d. To find d, all we have to do is multiply 65 and 2.5.
Hey there! I'm happy to help!
To find the volume of a cone, you multiply the base by the height and then divide by three.
First, we need to find the base. A cone has a circle for the base. To find the area of a circle, we square the radius and multiply it by pi (we will use 3.14).
4²=16
16×3.14= 50.24
Now, we multiply our base by the height.
50.24×8=401.92
Finally, we divide by three.
401.92÷3≈133.973 (to nearest thousandth)
Therefore, the volume of the cone is about 133.973 units cubed. If you were to use exact pi, it would be more like 134 because of all those decimals after pi!
Now you can find the volume of cones!
I hope that this helps! Have a wonderful day!
