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wel
4 years ago
7

Dolphins communicate using compression waves (longitudinal waves).  Some of the sounds dolphins make are outside the range of hu

man hearing.
Upon spotting a hungry shark, dolphin A sends a message to dolphin B.  To send this message as effectively as possible, dolphin A would
Physics
2 answers:
White raven [17]4 years ago
8 0
The dolphin would send an underwater message because the water is denser than air and therefore the sound would be louder and would travel faster. The denser the object the faster the sound travels.
11Alexandr11 [23.1K]4 years ago
8 0

Explanation:

Sound is a longitudinal wave. Sound wave consists of compression and rarefaction. It needs a medium to travel. It can travel in solid, liquid and gas. It travels faster in solid in comparison to liquid.

Dolphins communicate with each other using higher frequencies which are outside the range of human hearing.

In the given problem Dolphin A sends a message to dolphin B. Sound will travel through the water. Dolphin A sends a message to dolphin B underwater. A denser medium produces a louder sound.

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A package was determined to have a mass of 5.7 kg what's the force of gravity acting on the package on Earth
Natalka [10]

Given that,

mass m= 5.7 kg

Force of gravity = ?

Since,

Force of gravity acting on earth is equal to the weight and

W= mg

W= 5.7 * 9.81

W= 55.917

or

W= 56 N

Force of gravity acting on Earth by the package is 56 N.

6 0
3 years ago
Use the drop-down menus to order the steps for writing chemical formulas. Balance the charges. Identify the negative ion and cha
daser333 [38]

Answer:

The order of steps for writing a chemical formula is 3, 2, 1, 5, 4

Explanation:

Balance the charges. Identify the negative ion and charge. Identify the positive ion and charge. Use the information in the ratio to write the chemical formula. Write the ratio of ions that balances the charges.

The order of steps for writing a chemical formula from the options above is:

3.) Identify the positive in and charge.

2.) Identify the negative ion and charge.

1.) Balance the charges.

5.)Write the ratio of ions that balances the charges.

4.) Use the information in the ratio to write the chemical formula.

6 0
3 years ago
The combine mass of two objects sticking together is 1500 kg and is traveling at 63 m/s. If object 1 has a mass of 400 kg and wa
Roman55 [17]

Answer:

(a) -16.7 N s; (b) -167 N

Explanation:

Given: m = 0.530 kg; vi = 18.0 m/s; vf = 13.5 m/s; t = 0.100 s

Find: (a) Impulse, (b) Force

(a) Impulse = Momentum Change = m•Delta v = m•(vf - vi)= (0.530 kg)•( -13.5 m/s - 18.0 m/s)

Impulse = -16.7 kg•m/s = -16.7 N•s

where the "-" indicates that the impulse was opposite the original direction of motion.

(Note that a kg•m/s is equivalent to a N•s)

(b) The impulse is the product of force and time. So if impulse is known and time is known, force can be easily determined.

Impulse = F•t

F = Impulse/t = (-16.7 N s) / (0.100 s) = -167 N

where the "-" indicates that the impulse was opposite the original direction of motion.

7 0
2 years ago
the temperature of a bowl of hot soup goes down after the soup is poured into a bowl. whats happening to the motion of the parti
Stels [109]

Given what we know, as with all substances, the particles in the bowl of hot soup will slow down as they cool after being poured.

<h3>Why do particles slow when cooled?</h3>
  • This has to do with energy.
  • The soup particles are excited by heat energy.
  • As the soup is poured, its heat energy radiates and it loses energy.
  • Decreased energy causes the particles to slow down.

Therefore, the motion of the particles of the soup decrease or slows down as the soup cools due to the loss of energy they are experiencing. The soup radiates heat energy into the room or plate, causing the particles to lose energy and slow down.

To learn more about heat energy visit:

brainly.com/question/1495272?referrer=searchResults

6 0
3 years ago
True or false the magnetic poles of the earth move?
IgorLugansk [536]
I'm pretty sure it's true. Hope it helps!
5 0
4 years ago
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