If the wave passes the putrefying pile of a poached pickerel in 0.5 seconds, then the wave has a period of 0.5s.
But we say that if F=1/T,
where F⇒frequency,
T⇒period.
F=1/0.5
= 2Hz
velocity of the wave = distance/time taken
= (20÷100)/0.5
= 0.2÷0.5
= 2/5
Now form the wave equation,
V=λF
Where V ⇒ velocity of the wave.
λ⇒wavelength of the wave.
So, λ=V/F
λ = 2/5 ÷ 2
=2/5 ×1/2
= 2/10
=0.2 m
The wavelength in cm is, 0.2×100 = 20 cm.
Answer:
The original source of energy for gasoline is the SUN.
The average speed in m/s of a person that jogs eight complete laps around a 400m track in a total time of 15.1 min is 0.44m/s.
<h3>How to calculate average speed?</h3>
Average speed of a moving body can be calculated by dividing the distance moved by the time taken.
Average speed = Distance ÷ time
According to this question, a person jogs eight complete laps around a 400m track in a total time of 15.1 min. The average speed is calculated as follows:
15.1 minutes in seconds is as follows = 906 seconds
Average speed = 400m ÷ 906s
Average speed = 0.44m/s
Therefore, the average speed in m/s of a person that jogs eight complete laps around a 400m track in a total time of 15.1 min is 0.44m/s.
Learn more about average speed at: brainly.com/question/12322912
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Answer:
B. for an object that floats
Explanation:
For an object to float the weight of the object must be balanced by the buoyancy force.
However an object will sink if the magnitude of the buoyant force is equal to the weight of the amount of fluid that has the same volume as the object.
Answer:If a 5-kilogram mass is raised vertically 2 meters from the surface of the Earth, its gain in potential energy is approximately 1) 0 J 2) 10 J 3) 20 J 4) 100 J 43.
Explanation:
