**Answer:**

The coefficient of kinetic friction

**Explanation:**

From Newton's second law

If the velocity is constant, that means the summation of all forces must be equal to zero. Draw the free-body diagram to obtain the sums of forces in x and y. It must include the Friction Force, in the opposite direction of the displacement, the weight (), the Normal Force, which is the is the consequence of Newton's third law and the forces from the two workers.

The sum in y is:

Solving for the :

The sum in x is:

Solving for the :

The formula of the magnitude of the Friction force is

That means the coefficient of friction is:

Measure the amount of radioactive elements in the rock

One **phenomenon **which well presents the idea of **wave particle duality **is the** photoelectric effect.**

<h3>

**What is wave particle duality?**</h3>

The term **wave particle duality** has to do with the fact that a wave can behave sometimes as a **wave **and sometimes as a **particle**. This was well established by the work of **De Broglie.**

One **phenomenon **which well presents the idea of **wave particle duality **is the** photoelectric effect.**

Learn more about **wave particle duality**:brainly.com/question/14953274

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**Answer:**

Because the disturbances are in opposite directions for this superposition, the resulting amplitude is **zero for pure destructive interference**

**Explanation:**

**Answer:**

Because it is a stone fruit