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olganol [36]
3 years ago
7

Why sound heard better at night than at day?​

Physics
2 answers:
aivan3 [116]3 years ago
7 0
At night it’s very quiet and during the day most animals are sleeping so they’re not making noises and at night it’s so quiet you could hear farther away
vodomira [7]3 years ago
6 0

Answer:

it is because it is quieter at night than in the daytime. Therefore it is easy to hear the sound far away. However, it is only one of the reasons. Actually, sound transmits farther at night may be related to refraction of sound waves! First, sound is the vibration of air, and it is a kind of wave motion.

Explanation:

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Before CDs and cassette tapes, there were vinyl records. The most comon spun with an angular velocity of 33.3revolutionsperminut
sashaice [31]

Answer:

539.5°

Explanation:

33.3 revolutions per minute

1 revolution = 360°

1 minute = 60 seconds

hence

33.3 revs ----> 1 minute = 60 seconds

X revs -----------> 2.70 seconds

X = (33.3 x 2.7)÷60 = 1.4985 revolutions in 2.70 seconds

1.4985 revolutions = 1.4985 x 360 = 539.46

which is approximately 539.5°

7 0
2 years ago
Describe the interior structure of Earth and Earth’s crust as divided into tectonic plates riding on top of the slow moving curr
Dafna1 [17]

Hello There!

The mantle is the layer located directly under the sima. It is the largest layer of the Earth, 1800 miles thick. The mantle is composed of very hot, dense rock. This layer of rock even flows like asphalt under a heavy weight. This flow is due to great temperature differences from the bottom to the top of the mantle. The movement of the mantle is the reason that the plates of the Earth move! The temperature of the mantle varies from 1600 degrees Fahrenheit at the top to about 4000 degrees Fahrenheit near the bottom!

Hope This helped!

HyperZ ^_^

7 0
2 years ago
The horizontal surface on which the objects slide is frictionless. If M = 1.0 kg and the magnitude of the force of the small blo
sweet-ann [11.9K]

Answer:

The force is 7.8 N.

Explanation:

Given that,

Mass of small object = 2M

Mass of large object = 4M

Here, M = 1.0 kg

Force of the small block = 5.2 N

We need to calculate the acceleration of 4 kg block

Using formula of force

F=ma

a=\dfrac{F}{m}

a=\dfrac{5.2}{4}

a=1.3\ m/s^2

The 2 kg block is also accelerating at 1.3 m/s², making a total of 6 kg.

We need to calculate the force

Using formula of force

F=ma

Put the value into the formula

F=6\times1.3

F=7.8\ N

Hence, The force is 7.8 N.

5 0
3 years ago
Your EMS system covers a large area. For reliable transmission between mobile and portable​ radios, which of the following is​ e
Effectus [21]

Answer:

Repeaters

Explanation:

EMS are communication systems that coordinates emergency medical care among ambulances, 911 (telephone) dispatch centers, and hospital emergency departments. According to my research on EMS systems, I can say that based on the information provided within the question you would need Repeaters. These are a piece of hardware that repeats and extends a signal so that it reaches a greater distance.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

5 0
3 years ago
When plate tectonics cause cracks to form, _____________.
egoroff_w [7]
I think its probably 
B. Volcanoes can occur.
7 0
2 years ago
Read 2 more answers
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