Answer:
wavelength of the sound wave will be 0.977 m
Explanation:
We have given frequency of the sound wave f = 351 Hz
Speed of the sound wave v = 343 m/sec
We have to find the wavelength of the sound wave
We know that velocity of the sound wave is given by
So wavelength of the sound wave
So wavelength of the sound wave will be 0.977 m
let the mass of Venus is M then mass of Saturn is 100 M
similarly if the radius of Venus is R then the radius of Saturn is 10 R
now the force of gravity on a man of mass "m" at the surface of Venus is given by
now similarly the gravitational force on the man if he is at the surface of Saturn
so here if we divide the two forces
so here we can say
F1 = F2
so on both planets the gravitational force will be same
A 100kg crate slides along a floor with a starting velocity of 21 m/s. If the force due to friction is 8N, then, it will take 262.5 s for the box to come to rest.
We'll begin by calculating the declaration of the box. This can be obtained as follow:
Force (F) = –8 N (opposition)
Mass (m) = 100 Kg
<h3>Deceleration (a) =? </h3><h3>F = ma</h3>–8 = 100 × a
Divide both side by 1000
Therefore, the deceleration of the box is –0.08 ms¯²
Finally, we shall determine the time taken for the box to come to rest. This can be obtained as follow:
Deceleration (a) = –0.08 ms¯²
Initial velocity (u) = 21 ms¯¹
Final velocity (v) = 0 ms¯¹
<h3>Time (t) =.? </h3><h3>v = u + at</h3>0 = 21 + (–0.08×t)
0 = 21 – 0.08t
Collect like terms
0 – 21 = –0.08t
–21 = –0.08t
Divide both side by –0.08
Therefore, it will take 262.5 s for the box to come to rest.
Learn more: brainly.com/question/14446351