Answer:
Part i)
h = 5.44 m
Part ii)
h = 3.16 m
Explanation:
Part i)
Since the ball is rolling so its total kinetic energy in this case will convert into gravitational potential energy
So we have

here we know that for spherical shell and pure rolling conditions






Part b)
If ball is not rolling and just sliding over the hill then in that case



Answer:
The speed of the sound wave is 350 m
Explanation:
Given
Frequency of sound wave = 1000Hz = 1000
(since 1
= 1 Hertz (Hz))
Wavelength of sound wave = 35 cm
Speed of sound wave = ?
All waves have same the relation among frequency, sound and speed which is given by
v=fλ , where
v is the speed
f is frequency
λ is wavelength
Therefore, the speed of sound wave = 1000
x 35 cm
= 35000 cm
= 350 m
Hence the speed of the sound wave is 350 m
Answer:
0.28 ft
Explanation:
We are given that
Strength=m=
Distance between source and sink=15 ft
Distance between the sink of the source and origin=
ft
Uniform velocity, U=12 ft/s
We have to find the length of the oval.
Formula to find the half length of the body

Where a=Distance between sink of source and origin
U=Uniform velocity
m=Strength
l=Half length
Using the formula



Length of oval=
The angular velocity, ω=
2π/t; t = 24 hrs = 24 x 3600 seconds = 86400 s
ω = 7.27 x 10⁻⁵
v = ωr
= 7.27 x 10⁻⁵ x 3242.8 x 1.6 x 1000 (converting miles to meters)
= 377.2 m/s
Assuming that they were at the exact distance away from you when they both turned on their lights your answer would be C. no matter how fast the person is moving light still travels at the same speed. please give brainliest