Using a 685 nm wavelength laser, you form the diffraction pattern of a 1.11 mm wide slit on a screen. You measure on the screen
1 answer:
Answer:
13.8 m
Explanation:
Dark fringes are formed in a single slit experiment due to destructive interference that occurs due to interference.
The position of these dark fringes formed on a screen is given by:
where y = position of mth minimum
m = order of the minimum
D = distance of the slit from the screen
d = width of the slit
λ = wavelength of the light used
We need to find D:
From the question:
m = 11
y = 9.85 cm = 0.0985 m
λ =
d = 1.11 mm = 0.0011 m
Therefore:
The slit is 13.8 m far from the screen
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Answer:
The angle above the horizontal at which the pitcher throws the ball determines the distance the ball travels before returning to the height at which it was thrown
Explanation:
The baseball is thrown as a projectile and the range, 'R', of the baseball which is the distance the baseball travels before the height above the ground returns to the initial height is given given as follows;
Where;
R = The range of the baseball = The horizontal distance away from the pitcher the ball reaches
u = The initial velocity with which the baseball was thrown
θ = The angle above horizontal a baseball pitcher throws the ball
g = The acceleration due to gravity ≈ 9.81 m/s²
From the the equation, when θ = 0, sin(θ) = sin(0) = 0 and the ball does not cover any horizontal distance before going lower than the height at which it was thrown, therefore, for the ball to travel further, the angle of launch, θ has to be larger than 0.