Given data
wavelength λ=2.5 µm =2.5×10⁻⁶m
Diameter d=0.20 mm =0.20×10⁻³m
To find
Angle Θ in radians and degree
Solution
Circular apertures have first dark fringe at
Θ=(1.22λ)/d
Substitute the given values
So
Θ=[1.22(2.5×10⁻⁶m)]/0.20×10⁻³m
Θ=0.01525 rad
or
Θ=0.87°
And that’s why I think it might be C or D.
Answer:
kinectic energy-in physics kinetic energy of an object is the energy that it possesses due to its motion
- it is defined as the work needed to accelerate a body of a given mass from rest to its started velocity.having
- gained this energy during its acceleration
- The body maintains this kinetic energy unless its speed changes.
potential energy-in physics potential energy is the energy held by an object because of its position relative to other objects,its electric charge,or other factors
- in the case of a bow and arrow ,when archer does work on the bow drawing the string back
- some if the chemical energy of the archer's body is transformed into elastic potential energy in the bent limb of bow
RDA stands for Recommended Daily Allowance. To determine the amount needed of a certain adult per day, we simply multiply the mass of the adult to the value of RDA. For this case, we do as follows:
Daily requirement = 12 mg/kg ( 78 kg ) = 936 mg of lysine = 936000 g
The answer is : We’ll see the bell move, but we won’t hear it ring. This is because light can travel through vacuum but sound cannot. Sound waves are vibrations of particles in any media, so sound requires a medium to travel, and it cannot travel in a vacuum as there is no particles to vibrate.
Not trying to be mean plzz dont report me but I don’t see the question