The appropriate answer is 4. The formation of Mid-Ocean ridges. There are two types of divergent margins: continental separation and oceanic floor spreading. Where the sea floor separates magma upwells and new oceanic crust is formed. Mid ocean ridges are home to hydrothermal vents. These support a unique ecosystem of marine organisms. The Mid- Atlantic Ridge where the African and Eurasian plates separate from the North and South American plates.
Answer:
(a). The total sound intensity .
(b). The combined sound level 76.19 dB.
Explanation:
Given that,
Sound level = 75.0 dB
We need to calculate the noise
Using formula of intensity
Put the value into the formula
We need to calculate the sound intensity
(a). We need to calculate the total sound intensity
The total sound intensity
(b). We need to calculate the combined sound level
Using formula of sound level
Hence, (a). The total sound intensity .
(b). The combined sound level 76.19 dB.
The five planets that you can see from Earth without a telescope are Mercury, Venus, Mars, Jupiter and Saturn.
Answer:
Shield volcanoes, the third type of volcano, are built almost entirely of fluid lava flows. Flow after flow pours out in all directions from a central summit vent, or group of vents, building a broad, gently sloping cone of flat, domical shape, with a profile much like that of a warrior's shield.
Explanation:
Answer:2.51 s
Explanation:
Given
The radius of merry-go-round r=2 m
Speed of person at edge v=5 m/s
The person is in a uniform circular motion with constant velocity
time taken to complete one lap is