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liubo4ka [24]
3 years ago
14

Would a sound wave travel faster in a bedroom or a pool and why?

Physics
2 answers:
Dafna11 [192]3 years ago
8 0
Sound travels faster in water than in air. Pool means a source of water. Bedroom consists of air. So sound will travel faster through the pool than the bedroom
kodGreya [7K]3 years ago
6 0
Were the pool to be one of water, then sound would travel faster than in the air of a bedroom
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help me pass the test please there is a couple of questions in my profile to answer i am leaving this one for you to help ​
kompoz [17]

Answer:

0.5 m/s².

Explanation:

From the question given above, the following data were obtained:

Initial velocity (u) = 0 m/s

Final velocity (v) = 10 m/s

Time (t) = 20 s

Acceleration (a) =?

Acceleration can simply be defined as the rate of change of velocity with time. Mathematically, it is expressed as:

a = (v – u) / t

Where:

a is the acceleration.

v is the final velocity.

u is the initial velocity.

t is the time.

With the above formula, we can obtain the acceleration of the car as follow:

Initial velocity (u) = 0 m/s

Final velocity (v) = 10 m/s

Time (t) = 20 s

Acceleration (a) =?

a = (v – u) / t

a = (10 – 0) / 20

a = 10/20

a = 0.5 m/s²

Therefore, the acceleration of the car is 0.5 m/s².

6 0
2 years ago
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Nata [24]
When the child is moving fastest
6 0
3 years ago
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Does mechanical advantage have units? Explain your answer.
motikmotik

Answer:

The mechanical advantage of a machine is the ratio of the load (the resistance overcome by a machine) to the effort (the force applied). For an ideal (without friction) mechanism, it is also equal to: There is no unit for mechanical advantages since the unit for both input and output forces cancel out.

Explanation:

6 0
3 years ago
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A 2.8-kg cart is rolling along a frictionless, horizontal track towards a 1.2-kg cart that is held initially at rest. The carts
agasfer [191]

Answer with Explanation:

We are given that

Mass of one cart,m_1=2.8 kg

Mass of second cart,m_2=1.2 kg

Initial velocity of one cart,u_1=4.6m/s

Initial velocity of second cart,u_2=-2.7 m/s

a.Total momentum,P=m_1u_1+m_2u_2=2.8(4.6)+1.2(-2.7)

P=9.64 kgm/s

b.Velocity of second cart,v_2=0

According to law of conservation of momentum

Initial momentum=Final momentum

9.64=2.8v_1+1.2\times 0

v_1=\frac{9.64}{2.8}

v_1=3.44m/s

8 0
3 years ago
When Javier touches a hot mug of tea, energy is transferred from the surface of the mug to his hand. What kind of energy is this
sweet [91]

Answer:

Thermal energy

Explanation:

  • When work is being done energy is being transferred.
  • <em><u>Work can transfer energy between objects and cause a change in the form of energy.</u></em>
  • Thermal energy is a type of energy that is generated from heat. It is an example of kinetic energy that involves motion of particles.
  • <em><u>When  Javier touches a hot mug of tea, </u></em><em><u>thermal energy </u></em><em><u>is transferred from the surface of the mug to his hand through conduction.</u></em>

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3 years ago
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