In a magma pocket, under the earth's crust where the crust is thin
Answer:
a.) W/3, b.)2g/3 c.) (4gh/3)^0.5
Explanation:
First we have to find tension in terms of torque. To do that we have to find the moment of inertia of a rigid cylinder. From Wikipedia I get:
We also know the equation for torque. Let T be the tension, r be the distance, I is the moment of inertia and alpha is angular acceleration (ignore theta because it is perpendicular)
We can then substitute a/r for α
Therefore we get:
Isolating T and substitute the moment of inertia in for I we get
There are two known forces acting on the cylinder, gravity and tension. The sum of these two forces gives us mass times acceleration (Newton's second law)
This allows us to plug acceleration back into Newton's Second Law:
w = the weight
For part b, we solved in part a:
For part c, we use the conservation of energy. We know that the sum of energy in the system is zero.
Answer:
FALSE
Explanation:
The answer is false.
The speed of the sound in water is faster when compared to the speed of sound in air. This is because, the particles in air is loosely packed and are far from each other as compared to water or liquid.
The water particles are close to each other than air particles, so water particles are able to transmit the vibrations of the sound faster than the air particles.
Therefore sound waves travels faster in water than in air.
Answer:
a cold air mass and a warm air mass merge together
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