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Viktor [21]
3 years ago
12

A sample contains 10g of radioactive isotope. How much radioactive isotope will remain in the sample after 3 half-lives?

Physics
1 answer:
Ainat [17]3 years ago
3 0

Answer:

After 1 half-life (500 years), 500 g of the parent isotope will remain. After 2 half-lives (1000 years), 250 g of the parent isotope will remain. After 3 half-lives (1500 years), 125 g of the parent isotope will remain. After 4 half-lives (2000 years), 62.5 g of the parent isotope will remain.

Explanation:

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If you run around a circular track with a radius of 10m, what is the displacement after 3 full laps back to the start line?
Svetach [21]

Displacement will be zero.

<h3>What is displacement and how is it different from distance?</h3>

Displacement:

  1. It is the shortest distance between an object's beginning position and ending position.
  2. The quantity is a vector.
  3. It may be zero, positive, or negative.
  4. Displacement may be greater than or equal to distance.

In the given question, we start from one point and finish at the same point around the circular track. Therefore there is no distance between the initial and final points because they are the same. That's why the displacement is zero.

Distance:

  1. It is the actual path or distance that an object takes to go from its starting point to its finishing point.
  2. The quantity is a scalar one.
  3. It cannot be 0 or negative; it must be positive.
  4. Displacement and distance may be equal.

Learn more about displacement here:

brainly.com/question/14637077

#SPJ4

8 0
2 years ago
If you disconnect the wires from the battery and then reconnect them at the opposite ends of the battery, how does that change t
Likurg_2 [28]

Answer:

Explanation:

The current from the battery always flows from the positive terminal of the battery to the negative terminal of the battery.

If we connect a red coloured wire to the positive terminal of the battery and black coloured wire to the negative terminal of the battery, and then reverses the wire to their respective terminals, then there is no change in the direction of flow of current. It does not matter that which wire is connected to the particular terminal. The current always flow from positive to negative terminal of the battery outside the battery.

6 0
3 years ago
A large truck has more inertia than small car because it has more__
taurus [48]
The large truck can rest at a stable equilibrium as compare to the small,from the definition of inertia, <span>Inertia is the tendency of an object to remain at rest or in motion.</span>
6 0
3 years ago
1. Explain one way gravity affects objects.
Alex Ar [27]

Answer:

it makes it fall to the ground instead of float

Explanation:

8 0
3 years ago
I need help by today guys plz help
NISA [10]

radio waves bc they have the longest wave lenthgs in a magnetic spectrum

5 0
3 years ago
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