Answer:
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. Earth's volcanoes occur because its crust is broken into 17 major, rigid tectonic plates that float on a hotter, softer layer in its mantle.
The angular speed of the playground ride is determined as 0.3 rad/s.
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What is angular speed?</h3>
Angular speed is the rate at which an object changes it angles which we measure in radians in a given time.
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Angular speed of the ride</h3>
The angular speed of the ride if the ride makes one complete revolution is calculated as follows;
ω = θ/t
ω = 2π/t
where;
- ω is angular speed of the ride
- t is time of motion of the ride
one complete revolution = 2π radians
ω = 2π/21
ω = 0.3 rad/s
Thus, the angular speed of the playground ride is determined as 0.3 rad/s.
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The complete question is below;
A playground ride requires 21 seconds to make one complete revolution, what is angular speed of the ride in radian per second.
Answer: False
When the diaphragm
contracts, the muscles will also contract and pull upward and increase the size
of the thoracic cavity thus decreases air pressure inside during inspiration. After
the diaphragm contracts, it goes to relaxation, the muscles will also relaxed. It
gets looser and return to its original position higher up in the chest. This increase
the pressure in the chest, which force the air in the lungs out through the
nose.
Answer:
the one above the surface of earth
Explanation:
earth has gravity the ball of the moon would float away
Explanation:
An object is attached to the spring and then released. It begins to oscillate. If it is displaced a distance 0.125 m from its equilibrium position and released with zero initial speed. The amplitude of a wave is the maximum displacement of the particle. So, its amplitude is 0.125 m.
After 0.800 seconds, its displacement is found to be a distance 0.125 m on the opposite side. The time period will be, 
We know that the relation between the time period and the time period is given by :


f = 0.625 Hz
So, the frequency of the object is 0.625 Hz. Hence, this is the required solution.