Answer:
c
Explanation:
its better to let it flow out . but in a safe way .
Answer:
Graphs are used to display data because it is easier to see trends in the data when it is displayed visually compared to when it is displayed numerically in a table.
2. Line graphs are better to use because it's used to compare changes over the same period of time for more than one group.
The application of spectroscopy from the list given is : (B). determining the distance and velocity of galaxies
<h3>Meaning of spectroscopy</h3>
Spectroscopy is the branch of science, designed to investigate and measure the amount of spectra that is produced when a matter emits electromagnetic radiation or interacts with electromagnetic radiation.
Spectroscopy can also be said to mean the study of matters radiation or light emission and absorption
In conclusion. the application of spectroscopy is determining the distance and velocity of galaxies
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Answer:
There are two kinds of sonar: One is passive sonar, and the other is active sonar. For passive sonar, we don't send sound waves but just receive them. By listening to these special sound waves, animals that communicate with these particular sound waves can be detected. By listening to the sound waves from engines of submarines or ships, we can locate them.
Also, other things that vibrates can be detected by passive sonar. Many threats on the sea are usually detected by passive sonar this way. Since passive sonar does not transmit any thing to the environment, it does no harm to other animals. Active sonar is a little different.
Besides having a receiver, active sonar also transmits sound waves. Active sonar works by transmiting particular sound pulse and measuring the length of time for the sound to be reflected back, then devide the time by 2 to get the time it takes for the sound pulse to reach the object
Answer:
4th Substage of sensorimotor stage.
Explanation:
The sensorimotor stage consists of total six stages also known as the Piaget's Stages of Cognitive Development. These stages include the corrdination, physical development and mental development of any individual.
The vision, touch and coordination is involved in the 4th Substage of sensorimotor stage. The scheme and intentionality might also develop in this stage. The infant might manipulates the stick in the order to makes the attractive toy to his reach.
Thus, the answer is 4th Substage of sensorimotor stage.