Answer:
increase
Explanation:
According to Einstein's photoelectric equation; the energy of a photon striking a metal surface is related to the kinetic energy of the ejected photoelectron by the formula;
KE= hf - hfo
Where h is the planks constant, f and fo refer to the frequency of incident photon and the threshold frequency respectively.
Hence, we can clearly see from the foregoing that the kinetic energy of the ejected photoelectron is proportional to the frequency of the incident photon.
Hence, if the frequency of the incident photon is increased, the kinetic energy of the ejected photoelectron increases also.
Answer:
Explanation:
Given that
Volume
As we know that
So
So we cab say that is equal to .
Answer:
Uniform Circular Motion What is the direction of the force that acts on the clothes in the spin cycle of a washing machine?
Explanation:
The string acts as the centripetal force that pulls the bucket and water into the center and keeps them from following their paths of inertia, giving the illusion that centrifugal force is pulling the water away from the center. ... If you spin the bucket too slowly, the water will fall out and you will get wet.
Answer:
The carbon atom has greater kinetic energy than a hydrogen atom.
Hope this helps! :)
Answer:
F = G M m / R^ force between m and earth where R >= radius of earth
a = F / m = G M / R^2 acceleration at radius R
am / ae = (Re / Rm)^2 acceleration of meteor to that of earth
am / ar = (4 / 9.8) = (Re / Rm)^2
Rm = (9.8 / 4)^1/2 Re
Rm = 1.56 Re = 1.56 * 6.4E106 m = 10E6
10E6 - 6.4E6 = 3.6E6 m above surface of earth
(You only need mass of earth if you are calculating a at the surface of the earth)
Calculate g = G M / R^2 = 6.67E-11 * 6E24 / 6.4E6)^2 = 9.77 m/s^2
This is close to the value we used - 9.8 m/s^2