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Alchen [17]
4 years ago
6

Hamish is studying what happens when he sends a sound

Physics
2 answers:
horrorfan [7]4 years ago
6 0

Wave 3 will move the slowest, the statement could made about the data collected in Hamish's table

Answer: Option C

<u>Explanation: </u>

Sound waves require medium to pass from one to another. Depending upon the density of molecules in the medium, the speed of the sound waves can be determined. As we know that compression and rarefactions will be formed for propagation of sound waves when the waves collide with molecules of the medium.

So, if there is less molecules present in the medium or loosely packed molecules present in the medium with high mean free path length than the sound wave will be travelling slowly in that medium.

Thus, as we known that gas has the loosely packed molecules among the other states of matter, so wave 3 which is made to pass through the gas medium will be propagation at the lowest speed or will move the slowest compared to other 3 gases made to propagate in solid and liquid mediums.

Anestetic [448]4 years ago
4 0

Answer:

c

Explanation:

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8. If the mass of a balloon is 300 kg and the lift force provided by the atmosphere is 3300 N, what
zmey [24]

Answer:

Toward the north, 300 N

Explanation:

Consider the upward direction as positive and downward direction as negative.

Given:

Mass of the balloon is, m=300\ kg

Lift force on the balloon in the upward direction is, F_L=3300\ N

Take acceleration due to gravity as 10 N/kg.

Now, weight of the balloon acting downward is given as the product of its mass and acceleration due to gravity. Therefore,

Weight is, W=mg=(300\ kg)(10\ N/kg)=-3000\ N

Now, net force is given as the vector sum of both the forces.

F_{net}=F_L+W\\F_{net}=3300-3000=300\ N(\textrm{Upward direction})

The upward direction is the direction of North. So, the net force acting on the balloon is 300 N towards North.

3 0
3 years ago
The Slingshot is a ride for two people. It consists of a single passenger cage, two towers, and two elastic bands. Potential ene
Vitek1552 [10]

my bad I was in a herie last time can you please answer my question , I am going to give you the 5 points back for this question and extra 30 points ,

Explanation:

first its going to say 10 points for my question but after that I well make answer a small question and give you 30points. like whats your favorite color . stay tuned .

8 0
3 years ago
When you place an egg in water, it sinks. If you add salt to the water, after some time the egg floats. Choose the correct expla
lora16 [44]

Answer:

B

Explanation:

This happens because adding salt to the water decreases Its density. When the density of the water matches that of the egg, the egg becomes neutrally buoyant and floats.

The weight of the egg becomes equal to the upward buoyant force by the water on to the egg and hence, the egg floats.

5 0
4 years ago
Which feature in this graph represents:
Rom4ik [11]

Answer:

almost 100% positive its B but dont take me up on it

3 0
3 years ago
A 4400 W motor is used to do work. If the motor is used for 200 s, how much work could it do? (Power: P = W/t)
guajiro [1.7K]
So if p=w/t
then 4400=(w)(200)
so you would multiply 4440•200 and get 880,000
3 0
4 years ago
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