which situation involves shear? a. convergent boundaries b. isolated rift valleys c. volcanic mountain ranges d. frequent shallow earthquakes e. new rock formations
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Answer:
Frequent shallow earthquakes
Explanation:
Shear is the response of a rock to deformation usually by compressive stress and forms particular textures.
During an earthquake when the earth shakes it produces a super shear earthquake in which the propagation of the rupture along the fault surface occurs at speeds in excess of the seismic shear wave (S-wave) velocity.
The mechanisms of shearing depend on the pressure and temperature of the rock and on the rate of shear which the rock is subjected to.
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If a force of 65 N is exerted on a 45 kg sofa and the sofa is moved 6.0 meters, how much work is done in moving the sofa? 17,550 J 171.990 J 390 J none of the above
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Answer: Here's my answer, I made it step-by-step so you can understand it! <3
Explanation:
To find the centripetal acceleration of the tip of the fan blade, we can use the formula for centripetal acceleration:
a = (v^2) / r
where:
a is the centripetal acceleration,
v is the linear velocity, and
r is the radius of the circular path.
Given that the fan completes 2 rotations every 1.0 second, we can find the angular velocity (ω) using the formula:
ω = (2π * n) / t
where:
ω is the angular velocity,
π is a constant (approximately 3.14),
n is the number of rotations (2),
and t is the time taken (1.0 second).
Substituting the values into the formula, we have:
ω = (2π * 2) / 1.0 = 4π rad/s
Next, we can calculate the linear velocity (v) using the formula:
v = r * ω
Substituting the given radius value (0.61 m) and the angular velocity we found earlier, we have:
v = 0.61 * 4π = 2.44π m/s
Finally, we can calculate the centripetal acceleration (a) using the formula:
a = (v^2) / r
Substituting the linear velocity and the radius, we have:
a = (2.44π)^2 / 0.61 = 5.88π^2 / 0.61 ≈ 96 m/s²
Therefore, the centripetal acceleration of the tip of the fan blade is approximately 96 m/s² (Option 4).
Answers
Answer:
How are we expected to make an island
Answers
Answer:
Every material and the void.
Explanation:
Light is a kind of electromagnetic wave and electromagnetic waves do not need a medium to propagate itself. Light can travel through every medium and even in void.
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Answers
The orbital velocity of Venus and Saturn around the sun is 8.854 x .
What is orbital velocity?
Orbital velocity is the speed required to achieve orbit around a celestial body, such as a planet or a star.
So you can compute the force of gravity on the planet
or
Where d is the average distance of the planet from the sun and m is the mass of the planet (I will keep these as symbols so doing Saturn and Venus will be simple substitutions into one formula in the end).
Now realize that if they are in a stable circular orbit, then this force must provide the necessary centripetal force or
So we get:
The m's cancel out as does one
Evaluating and square rooting yeilds:
Now plug in 0.72 for venus and 9.54 for saturn
Venus = 35067.39 m/s
Saturn = 9633.75 m/s
Some precision was lost rounding to 8.854 x 10⁸, so if more precision is required type the whole thing from before into a calculator. Anyways the process is sound.
Learn more about orbital velocity here:
#SPJ2
or (6.674 X 10^−11)(1.99 X 10^30)m / d^2(1.5 X 10^11)^2
Where d is the average distance of the planet form the sun and m is the mass of the planet (I will keep these as symbols so doing Saturn and Venus will be simple substitution into one formula in the end).
Now realize that if they are in stable circular orbit, then this force must provide the necessary centripetal force mv^2/r or mv^2 / d(1.5 X 10^11)
So we get:
(6.674 X 10^−11)(1.99 X 10^30)m / d^2(1.5 X 10^11)^2 = mv^2 / d(1.5 X 10^11)
The m's cancel out as does one 1/d(1.5 X 10^11)
(6.674 X 10^−11)(1.99 X 10^30) / d(1.5 X 10^11) = v^2
Evaluating and square rooting yeilds:
v = sqrt((8.854 X 10^8)/d)
Now plug in 0.72 for venus and 9.54 for saturn
Venus = 35067.39 m/s
Saturn = 9633.75 m/s
Some precision was lost rounding to 8.854 X 10^8, so if more presion is required just type the whole thing from before into a calculator. Anyways the process is sound
The points are: Before the Elevator Accelerates Downward, In Freefall, At Impact
Analyze whether the Normal Force would need to increase, and where the direction of the net force is for each object.
Answers
Answer:
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Explanation:
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