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Olegator [25]
3 years ago
10

Mechanical waves are created when a source of energy causes a medium to ?

Physics
2 answers:
erica [24]3 years ago
5 0
Mechanical waves are created when a source of energy cause a medium to "VIBRATE".
garik1379 [7]3 years ago
3 0
<span>A mechanical wave is created when a source of energy causes a vibration to travel through a medium 

And yeah lol 
A mechanical wave is a disturbance in matter that carries energy from one place to another :) 

This what you needed? </span>
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Why are there variations of traits within a population?
nydimaria [60]

Answer:

The variation and distribution of traits in a population depend on genetic and environmental factors. Genetic variation can result from mutations caused by environmental factors or errors in DNA replication, or from chromosomes swapping sections during meiosis.

Explanation:

Hope this helps!

3 0
3 years ago
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A bowling ball is 21.6 cm in diameter. What is the angular speed of these ball whenit is moving at 3.0 m/s?
sergejj [24]

Answer:

Angular speed = 27.78 rad/s (Approx)

Explanation:

Given:

Diameter = 21.6 cm

Speed = 3 m/s

Find:

Angular speed

Computation:

Radius = 21.6 / 2 = 10.8 cm = 0.108 m

Angular speed = v / r

Angular speed = 3 / 0.108

Angular speed = 27.78 rad/s (Approx)

3 0
2 years ago
Charged low pressure refrigeration machines may be most efficiently leak checked by
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6 0
3 years ago
A ball player catches a ball 3.24 s after throwing it vertically upward.With what speed did he throw it?
Firdavs [7]
Doesn't seem like we know much here, but we can answer it. Let's talk about what we know. We know it takes 3.24 s for the ball to go up and drop back down again. We know that gravity is the only force acting after the ball leaves the hand, so a = 9.8 m/s^2 (we'll say it's negative in our equations because down being negative is intuitive). We also know that it stops moving for a brief moment at the top of the arc, where v = 0 m/s. Because gravity is the only force, and it slows it down on the way up at the same rate it speeds it up on the way down and the distance covered in upward and downward motion is the same, we can confidently say that it will reach the top of its arc (where v = 0 and it turns around) in half the total time it is in the air, so it takes 1.62 s to reach the peak. Now we can use a kinematics equation, let's use vf = vi + a*t, where vf is final velocity and is 0, vi is initial velocity and is some unknown v we need to solve for, a is acceleration and is -9.8 m/s^2 and t is time and since this is just to the top of the arc, we'll use half the time so 1.62 s. We can solve for vi and plug stuff in like so: v = -a*t = -(-9.8m/s^2)*(1.62s) = 15.876 m/s.
8 0
3 years ago
An ice skater spins with her arms outstretched at 1 revolution per second. She pulls her arms in toward her body. Does her angul
MA_775_DIABLO [31]

Answer:

Her angular momentum does not change.

Explanation:

Conservation of angular momentum: It states that there is no change in the angular momentum when no torque outside the system is applied to the body.

In the given problem, an ice skater spins her arm outstretched. She pulls her arms in towards her body.

The angular momentum of an ice skaters remains same as the there is no external torque applied on an ice skater. The initial angular momentum  and the final angular momentum of the given system are same. Therefore, the angular momentum is conserved.

Therefore, her angular momentum does not change.

7 0
3 years ago
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