Answer:
I belive it would be B or D, but B seems more likely
Explanation:
Answer:
its speed when its height was half that of its starting point is 25.46 m/s
Explanation:
Given;
final speed of the roller coaster, v = 36 m/s
Applying general equation of motion;
V² = U² + 2gh
where;
V is the final speed of the roller coaster
U is the initial speed of the roller coaster = 0
h is the height attained at a given velocity
36² = 0 + (2 x 9.8)h
1296 = 19.6 h
h = 1296/19.6
h = 66.1224 m
when its height was half that of its starting point, h₂ = ¹/₂ h
h₂ = ¹/₂(66.1224 m) = 33.061 m
At h = 33.061 m, V = ?
V² = U² + 2gh
V² = 0 + 2 x 9.8 x 33.061
V² = 648
V = √648
V = 25.46 m/s
Therefore, its speed when its height was half that of its starting point is 25.46 m/s
Answer:
5.00 × 10^14 Hz
Explanation:
The wavelength of the light in the medium can be calculated by using the formula:
λ = v / f
Where;
λ = wavelength (m)
v = speed of light
f = frequency (Hz)
From the provided information, λ = 600 nm (600 × 10^-9m), v = 3 × 10^8m/s.
λ = v / f
λ = 3 × 10^8/600 × 10^-9
λ = 0.005 × 10^(8+9)
λ = 0.005 × 10^17
λ = 5.00 × 10^14 Hz
The frequency of the light in the medium is 5.00 × 10^14 Hz
The Milky Way is the galaxy that contains our Solar System. Its name "milky" is derived from its appearance as a dim glowing band arching across the night sky whose individual stars cannot be distinguished by the naked eye.
Age: 13.21 billion years
