at some point the velocity of the ball will reach 0 so we can say that Vf=0
then we have to divide the total time by 2 for upward and down ward motion of the ball which gives us 8.25s/2=4.125s
now the given are
for the formula of initial velocity
How can heat do work in an electric heater ?
The electric heater works with the electrical resistance and it transmits heat through its filaments in the apparatus. The electric heater works by non-ionizing electromagnetic radiation, ie the work is done from infrared heat transfer.
Before we answer this question, we first describe what is a lifestyle.
Lifestyle - They way people choose to live with its beliefs, attitude, culture view of life. Playing basketball is an example of a lifestyle. Watching Korean movies is also and example of a lifestyle. Anything we love to do, or things we necessary do are all example of a lifestyle.
Electricity - The major source of energy distributed in the society for the electric appliances used by the people to work like - TV, computer, lightning product, refrigerator, charging the battery for mobile phones and etc.
Understanding the contribution of electricity will help you realize that it would somehow improve the lifestyle of an individual. You can use your TV in watching your favorite movies. You can use your computer anytime you want. It provides light at night as a replacement of sunlight. It will make thing easy for you and help you improve your lifestyle.
For more information, kindly visit the link below: