Answer:
Angular velocity = 0.105 rads⁻¹
speed of tip = 0.00105 ms⁻¹
Explanation:
A second hand turns 2π rad each 60 sec
Thus: it has an angular speed given by
ω = 2π/T = 2π/60 = π/30 = 0.105 rad s⁻¹
The speed of the tip is given by
V= rω = 0.01 m × (0.105 rads⁻¹)
= 0.00105 ms⁻¹
Answer: All igneous rocks the basis of the rock cycle is formed by plate tectonics. ... This movement from igneous to sedimentary back to igneous is a major part of the rock cycle. The heat from the mantle that fuels plate tectonics causes both igneous and sedimentary rocks to be turned into metamorphic rocks.
Explanation: BRAINLEST?
Explanation:
Usually when we think of waves, we think of transverse waves. These are waves where points move up and down perpendicular to the motion of the wave. Examples include water waves, whipping a rope, or even doing the "wave" in a crowd. You can think of these as "two dimensional" waves.
Longitudinal waves are waves where points move left or right, parallel to the motion of the wave. In other words, there is compression and expansion of the medium. Examples include sound waves, or pulses in a slinky.
Hello,
Here is your answer:
The proper answer to this question is "because of there substantial size the rock rests on another rock which keeps it balanced".
If you need anymore help feel free to ask me!
Hope this helps!
Answer:84.405m,![\theta =48.876^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%20%3D48.876%5E%7B%5Ccirc%7D)
Explanation:
Given
Person walk 42 miles due to north so its position vector is
![r_1=42\hat{j}](https://tex.z-dn.net/?f=r_1%3D42%5Chat%7Bj%7D)
Now he deviates
to east and walk 65 miles
so its new position vector
![r_2=42\hat{j}+65cos78\hat{j}+65sin78\hat{i}](https://tex.z-dn.net/?f=r_2%3D42%5Chat%7Bj%7D%2B65cos78%5Chat%7Bj%7D%2B65sin78%5Chat%7Bi%7D)
![r_2=65sin78\hat{i}+\left ( 42+65cos78\right )\hat{j}](https://tex.z-dn.net/?f=r_2%3D65sin78%5Chat%7Bi%7D%2B%5Cleft%20%28%2042%2B65cos78%5Cright%20%29%5Chat%7Bj%7D)
So magnitude of acceleration is
![|r_2|=\sqrt{\left ( 65sin78\right )^2+\left ( 42+65cos78\right )^2}](https://tex.z-dn.net/?f=%7Cr_2%7C%3D%5Csqrt%7B%5Cleft%20%28%2065sin78%5Cright%20%29%5E2%2B%5Cleft%20%28%2042%2B65cos78%5Cright%20%29%5E2%7D)
![|r_2|=\sqrt{63.58^2+55.514^2}](https://tex.z-dn.net/?f=%7Cr_2%7C%3D%5Csqrt%7B63.58%5E2%2B55.514%5E2%7D)
![|r_2|=84.405 m](https://tex.z-dn.net/?f=%7Cr_2%7C%3D84.405%20m)
for direction
![tan\theta =\frac{42+65cos78}{65sin78}](https://tex.z-dn.net/?f=tan%5Ctheta%20%3D%5Cfrac%7B42%2B65cos78%7D%7B65sin78%7D)
![tan\theta =0.8731](https://tex.z-dn.net/?f=tan%5Ctheta%20%3D0.8731%20)
![\theta =41.124^{\circ}with\ respect\ to\ east](https://tex.z-dn.net/?f=%5Ctheta%20%3D41.124%5E%7B%5Ccirc%7Dwith%5C%20respect%5C%20to%5C%20east)
![\theta =48.876^{\circ}with\ respect\ to\ North](https://tex.z-dn.net/?f=%5Ctheta%20%3D48.876%5E%7B%5Ccirc%7Dwith%5C%20respect%5C%20to%5C%20North)