Answer:
When equal and opposite forces meet each other, it results in motion and they would repel away from each other, causing the asteroid to be sent away from the earth.
Explanation:
Newton's Third Law states that every action has an equal and opposite reaction.
Answer:
<em>Refraction is the change in direction of waves that occurs when waves travel from one medium to another. ... Diffraction is the bending of waves around obstacles and openings. The amount of diffraction increases with increasing wavelength.</em>
Answer:
the sound intensity at the position of the microphone is 7.4 × 10⁻⁴ W/m²
Explanation:
Given the data in the question;
Sound power P = 26.0 W
Area of microphone A = 1.00 cm²
Radius r = 53.0 m
sound intensity at the position of the microphone = ?
Now, intensity at the position of the microphone can be determined using the following expression;
= P / 4πr²
We substitute
= 26.0 / ( 4 × π × (53.0 )² )
= 26.0 / ( 4 × π × 2809 )
= 26.0 / 35298.935
= 26.0 / ( 4 × π × (53.0 )² )
= 0.000736566
= 7.4 × 10⁻⁴ W/m²
Therefore, the sound intensity at the position of the microphone is 7.4 × 10⁻⁴ W/m²
Answer:
![\frac{R}{1} = \frac{44}{9}\ohm](https://tex.z-dn.net/?f=%5Cfrac%7BR%7D%7B1%7D%20%3D%20%5Cfrac%7B44%7D%7B9%7D%5Cohm)
Explanation:
Let us imagine that there are three wire of length equal length having equal resistances each of 44/3 Ω
Now connect these wires in parallel to so that their equivalent resistance is R.
then
![\frac{1}{R} = \frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7BR%7D%20%3D%20%5Cfrac%7B1%7D%7BR_1%7D%2B%5Cfrac%7B1%7D%7BR_2%7D%2B%5Cfrac%7B1%7D%7BR_3%7D)
![\frac{1}{R} = \frac{3}{44}+\frac{3}{44}+\frac{3}{44}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7BR%7D%20%3D%20%5Cfrac%7B3%7D%7B44%7D%2B%5Cfrac%7B3%7D%7B44%7D%2B%5Cfrac%7B3%7D%7B44%7D)
![\frac{1}{R} = \frac{9}{44}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7BR%7D%20%3D%20%5Cfrac%7B9%7D%7B44%7D)
⇒![\frac{R}{1} = \frac{44}{9}\ohm](https://tex.z-dn.net/?f=%5Cfrac%7BR%7D%7B1%7D%20%3D%20%5Cfrac%7B44%7D%7B9%7D%5Cohm)
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)