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3 years ago

Can someone tell me everything they know about mechanical waves and ASAP, please!?!?!?

2 answers:

7 0

A mechanical wave is a wave that is caused by matter oscillations and thus transfers energy through a medium. Although waves can travel great distances, the medium of transmission—the material—can only go so far. As a result, the oscillating material stays close to its initial equilibrium position.

Hope this helps

oksano4ka [1.4K]3 years ago

6 0

Answer:

A mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium. While waves can move over long distances, the movement of the medium of transmission—the material—is limited. Therefore, the oscillating material does not move far fro

Explanation:

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A 68.5‐kg astronaut is doing a repair in space on the orbiting space station. She is at rest relative to the space station. She

xeze [42]

Answer:

The velocity of astronaut will be 0.105 m/s in opposite direction of the tool.

Explanation:

Given that,

Mass of the Astronaut, m = 68.5 kg

Mass of the the tool, m' = 2.25 kg

Speed of tool, v' = -3.2 m/s (direction is sway from space station)

It is required to find the speed of the astronaut. The momentum will remain conserved. So,

$mv=m'v'$

v is the speed if Astronaut

$v=\dfrac{m'v'}{m}\\\\v=\dfrac{2.25\times (-3.2)}{68.5}\\\\v=-0.105\ m/s$

So, the velocity of astronaut will be 0.105 m/s in opposite direction of the tool.

7 0

3 years ago

Net force is the sum of all the forces acting on an object. If a spring balance pulls on a body with a force of 10 N, and fricti

julsineya [31]

Answer:

Explanation:

(25 N - 20 N = 5 N)

3 0

4 years ago

Two blocks, stacked one on top of the other, slide on a frictionless horizontal surface. The surface between the two blocks is r

devlian [24]

Answer:

$F_{net} = 31.88 N$

Explanation:

When top block is just or about to slide on the lower block then we can say that the frictional force on it will be maximum static friction

So we will have

$F_{net} = ma$

$F_s = ma$

$\mu_s mg = ma$

$a = \mu_s g$

$a = (0.50)(9.81)$

$a = 4.905 m/s^2$

now for the Net force on two blocks to move together

$F_{net} = (m_1 + m_2) a$

$F_{net} = (2.3 + 4.2)(4.905)$

$F_{net} = 31.88 N$

4 0

3 years ago

When finding net force, why must you know the directions of the forces acting on an object?

Mariulka [41]

<h3>One reason we should know what the directions of the forces acting on an object is so we can know if we have to add or subtract. same = add together, opposite = subtract from each other. Also if we don't pay attention to the direction the Net force will be wont be accurate. There will be factors that will upset the calculation.So we must know the direction of the two forces because we have to know if we are adding or subtracting and if the answer is accurate. </h3>

<em>I hope this helps!.</em>

8 0

3 years ago

I'm a car how does an air bag minimize the force acting on a person during a collision?

Sedaia [141]

The answer is B.It decreases the change of the momentum of the person

3 0

3 years ago

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