Answer:
Speed = 300 m/s
Explanation:
Given the following data;
Frequency = 30 Hz
Wavelength = 10 m
To find the speed of the wave;
Mathematically, the speed of a wave is given by the formula:
Substituting into the formula, we have;
Speed = 300 m/s
the higher concentration of molecules, the faster a reaction can occur
Answer:
Explanation:
Given
velocity of mug with which it leaves the bar is 1.7 m/s
Also
height of bar=1 m
Considering motion in vertical direction
![s=u_yt+\frac{gt^2}{2}](https://tex.z-dn.net/?f=s%3Du_yt%2B%5Cfrac%7Bgt%5E2%7D%7B2%7D)
here ![u_y=0](https://tex.z-dn.net/?f=u_y%3D0)
![1=0+\frac{9.81\times t^2}{2}](https://tex.z-dn.net/?f=1%3D0%2B%5Cfrac%7B9.81%5Ctimes%20t%5E2%7D%7B2%7D)
![t=\sqrt{\frac{2}{9.81}}](https://tex.z-dn.net/?f=t%3D%5Csqrt%7B%5Cfrac%7B2%7D%7B9.81%7D%7D)
t=0.451 s
so horizontal distance traveled is
![R_x=ut+\frac{at^2}{2}](https://tex.z-dn.net/?f=R_x%3Dut%2B%5Cfrac%7Bat%5E2%7D%7B2%7D)
here a=0
![R_x=1.7\times 0.451=0.766 m/s](https://tex.z-dn.net/?f=R_x%3D1.7%5Ctimes%200.451%3D0.766%20m%2Fs)
speed of mug will be combination of horizontal and vertical velocity
![v_y=u+gt](https://tex.z-dn.net/?f=v_y%3Du%2Bgt)
![v_y=0+9.81\times 0.451=4.42 m/s](https://tex.z-dn.net/?f=v_y%3D0%2B9.81%5Ctimes%200.451%3D4.42%20m%2Fs)
![v_x=1.7 m/s](https://tex.z-dn.net/?f=v_x%3D1.7%20m%2Fs)
thus ![v_{net}=\sqrt{v_x^2+v_y^2}](https://tex.z-dn.net/?f=v_%7Bnet%7D%3D%5Csqrt%7Bv_x%5E2%2Bv_y%5E2%7D)
![v_{net}=\sqrt{4.42^2+1.7^2}](https://tex.z-dn.net/?f=v_%7Bnet%7D%3D%5Csqrt%7B4.42%5E2%2B1.7%5E2%7D)
![v_{net}=\sqrt{22.46}=4.74 m/s](https://tex.z-dn.net/?f=v_%7Bnet%7D%3D%5Csqrt%7B22.46%7D%3D4.74%20m%2Fs)
for direction
![tan\theta =\frac{4.42}{1.7}=2.6](https://tex.z-dn.net/?f=tan%5Ctheta%20%3D%5Cfrac%7B4.42%7D%7B1.7%7D%3D2.6)
![\theta =69](https://tex.z-dn.net/?f=%5Ctheta%20%3D69)
is with x axis in clockwise sense
The answer is C because the troposphere is part of earth's atmosphere while the photosphere is below the chromosphere. A corona is known as the aura around stars.
Answer:
<h2>True</h2>
Explanation:
That's my answer hope it helped