Answer: 
Explanation:
Given
Car starts from the state of rest and acquires a velocity of 
in 6 minutes
Final velocity in m/s is 
Using equation of motion
Distance covered in 360 s
A) We want to find the work function of the potassium. Apply this equation:
E = 1243/λ - Φ
E = energy of photoelectron, λ = incoming light wavelength, Φ = potassium work function
Given values:
E = 2.93eV, λ = 240nm
Plug in and solve for Φ:
2.93 = 1243/240 - Φ
Φ = 2.25eV
B) We want to find the threshold wavelength, i.e. find the wavelength such that the energy E of the photoelectrons is 0eV. Plug in E = 0eV and Φ = 2.25eV and solve for the threshold wavelength λ:
E = 1243/λ - Φ
0 = 1243/λ - Φ
0 = 1243/λ - 2.25
λ = 552nm
C) We want to find the frequency associated with the threshold wavelength. Apply this equation:
c = fλ
c = speed of light in a vacuum, f = frequency, λ = wavelength
Given values:
c = 3×10⁸m/s, λ = 5.52×10⁻⁷m
Plug in and solve for f:
3×10⁸ = f(5.52×10⁻⁷)
f = 5.43×10¹⁴Hz
Answer:
The light of a light bulb contains all the wavelengths of visible band which on passing through diffraction grating appear in the form of continuous spectra.
Discrete lines are observed when the electron makes a transition from higher orbit to lower orbit releasing a photon having energy which is equivalent to the energy difference between the two orbits.
Answer:
Answered
Explanation:
The largest Semi major axis- Neptune( 30.0611 AU).
Largest avg. Orbital speed around the Sun- 47.9 km/s of mercury.
The Largest orbital period around the Sun- 164.79 years for Neptune by 1 year on Earth.
The largest Eccentricity of orbit- is Of Mercury (0.206)
Note: All data has been taken from the internet, hope it helps
