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Volgvan
3 years ago
13

PLZZZ HELP!!!

Physics
2 answers:
sdas [7]3 years ago
7 0

Answer:

The crests of the sound wave are spaced closer together.

Explanation:

the wavelength between successive crests is decreased due to the motion of the truck in the same direction as the sound

tatyana61 [14]3 years ago
3 0

Answer and Explanation: The Doppler effect is a change in the frequency of sound waves that occurs when the source of the sound waves is moving relative to a stationary listener. As the source of sound waves approaches a listener, the sound waves get closer together, increasing their frequency and the pitch of the sound.

Hopefully that helped!

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Diana observed that the plants in her garden were not growing well due to poor soil conditions. She tested the soil and used the
n200080 [17]
The appropriate answer is c. silty clay loam. This is the most likely soil that was present in the garden before sand was added to balance it. This type of soil contains an even mix of silt and clay. This type of soil does not drain well and tends to hold water. This would not be suitable for most garden variety plants. Adding sand to the soil ensures better drainage and removes moisture that would rot roots or create conditions for fungi to develop.
7 0
3 years ago
Newtons first law states that objects in motion stays in motion until an unbalanced force is acted upon it. what do you think th
EleoNora [17]
Hi Spycn2115


Newton's first law states that objects in motion stay in motion until an unbalanced force is acted upon it is a good fact. When I first personally heard of it in class I had no clue but when I researched it I learned that one good example of this would be those cradle balls and if u swing it, it will keep constantly hitting each other back and fourth over and over until someone grabs it and stops it, so that's what objects in motion stays in motion until an unbalanced force is acted upon it means, because the balls are in motion by moving left to right constantly and its staying in motion by not stopping and that unbalanced force is someone or something maybe hitting it or knocking it over could stop it, balanced means staying still and equal, unbalanced means unstill so moving, the cradle balls are KE and PE, (Kinect and potential energy) because kinetic means moving, so the balls are moving, and potential means stored up, so before u even swing u have the potential energy to swing it different ways before it becomes kinetic. That's one of my favorite examples of Newton's first law and I left you a pic below of cradle balls to help you get the idea.

8 0
3 years ago
Inhaling moves the diapragm (blank) and expand the (blank)
Anastaziya [24]
Inhaling moves the diaphragm CONTRACTS and expand the LUNGS.
7 0
2 years ago
During the operation of a voltaic cell the cell produces
Leona [35]

Answer:

Electrical energy spontaneously

Explanation:

7 0
2 years ago
Car a is heading north with a velocity of 14 m/s. car b is traveling north also, with a velocity of 19 m/s. what is the relative
kicyunya [14]
a.)  Relative velocity = velocity of car B - velocity of car A
                             = 19 - 14
                             = 5 m/s
Hope this cleared your doubt, feel free to ask any question regarding this and have a nice day ahead! :)
6 0
4 years ago
Read 2 more answers
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