Complete Question
One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. Having recently studied optics in your physics class, you're not too surprised to see that the patch of light seems to be a circular diffraction pattern. It appears that the central maximum is about 2 cm across, and you estimate that the distance from the window shade to the wall is about 5 m.
Required:
Estimate the diameter of the pinhole.
Answer:
The diameter is
Explanation:
From the question we are told that
The central maxima is
The distance from the window shade is
The average wavelength of the sun is mathematically evaluated as
Generally the visible light spectrum has a wavelength range between 400 nm to 700 nm
So the initial wavelength of the sun is
and the final wavelength is
Substituting this into the above equation
The diameter is evaluated as
substituting values
Answer:
Kinetic energy is the energy an object has because of its motion.
Explanation:
ldk it's probably "object" that's all I know
V=IR, V=30, I=2, algebra and tada, R=15
Answer: B, composite
Explanation: Sunlight is composite because it is the most likely choice present and I have only ever heard it referred to as composite! Hope this helps, God bless!
Explanation:
It is given that,
Charge on the particle,
Mass of the particle,
Magnetic field component,
Net magnetic field,
Speed of the particle, v = 5 km/s = 5000 m/s
Angle between velocity and magnetic field,
Magnetic force is given by :
Acceleration of the particle is given by,
So, the acceleration of the particle is 38.6 m/s². Hence, this is the required solution.