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DochEvi [55]
3 years ago
10

How long would it take for a sound impulse to travel through a copper Rod 20km

Physics
1 answer:
Nana76 [90]3 years ago
8 0
Not sure.can you give me a clue?


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One cycle of the power dissipated by a resistor ( R = 800 Ω R=800 Ω) is given by P ( t ) = 60 W , 0 ≤ t < 5.0 s P(t)=60 W, 0≤
OLga [1]

Answer:

42.5W

Explanation:

To solve this problem we must go back to the calculations of a weighted average based on the time elapsed thus,

Power_{avg} = \frac{P_1(t_1)+P_2(t_2)}{t_1+t_2}

We need to calculate the average power dissipated by the 800\Omega resistor.

Our values are given by:

P(t)=60 W, 0\leq t

P(t)=25 W, 5.0\leq t

Aplying the values to the equation we have:

Power_{avg} = \frac{P_1(t_1)+P_2(t_2)}{t_1+t_2}

Power_{avg} = \frac{60(5-0)+25(10-5)}{(5-0)+(10-5)}

Power_{avg} = 42.5W

5 0
2 years ago
In the formula Work=Force X Distance, what happens to the amount of work done if either Force or Distance is increased?
AfilCa [17]

Explanation:

If force or distance is increased, then amount of workdone will also increase.

6 0
3 years ago
What is an unbalanced force. in your own words but be more detailed.
pogonyaev

Answer:

An unbalanced force is a force that causes an object's state of motion to change. In other words, unbalanced forces are the things that make objects speed up or slow down.

Explanation:

(self-explanatory)

7 0
2 years ago
What s an asteroid?
Cerrena [4.2K]

Answer:

A. rocky orbiting object

7 0
3 years ago
Read 2 more answers
Suppose you know only the position of an object at instants A and B. Is more than one displacement possible? Is more than one av
Burka [1]
<span>Is more than one displacement possible?
No, displacement only considers the initial and final position.
Is more than one average velocity possible?
No, the average velocity is defined as displacement per time and since there is only one displacement possible, there is only one average velocity possible as well.
Is more than one average speed possible?
Yes, the average speed considers the total distance traveled and this distance may not be the same as the total displacement.
</span>
7 0
3 years ago
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