To develop this problem, we will apply Einstein's relationship which is in charge of the work done with the kinetic energy of the body versus the total energy of the system.
The energy can be calculated as

Here,
h = Planck's Constant
f = Frequency
Our values are given as,


Therefore the Energy is



Then,

Applying the Einstein Relation we have that




Therefore the maximum kinetic energy for an electron dislodged fromthe surface by the radiation is 7.68eV
You need to write the question
It’s d because it’s useful output which would be light over total input
7.5/8
Answer:
TIME he applied the fertilizer to each plant
Explanation:
Independent variable in an experiment is the variable that is subject to change or manipulation by the experimenter. In this experiment, Bob wanted to investigate the effects of plant fertilizer. Bob sets up the experiment by applying the fertilizer to each plant at DIFFERENT TIMES i.e. plant 1-every morning, plant 2-once a week, plant 3-never.
Based on this, it is obvious that the independent or manipulated variable is the TIME at which he applied the fertilizer. On the other hand, the dependent or measured variable is the height of the plants.
B. Mining in the Guinean Forests of West Africa to provide diamond and gold jewelry for humans.