Read the article “Energy Sources Tomorrow” on page 80 of your textbook and to answer the following questions (15 points). I have attached a copy of the article in case you don’t have the textbook.
Name some advantages of solar cells.
Why is solar energy becoming more common for household electricity use?
Name some advantages and disadvantages of using hydrogen as a source of energy.
Mention one disadvantage for each of the following sources: wind and biomass.
From your point of view what energy source in the article looks more promising in the near future. Why?
Solve
A 0.5 𝑘g ball is released from a height of 4.0 𝑚. What is its velocity just as it hits the ground?
An electric lift can raise a 600.0 𝑘g mass a distance of 20.0 𝑚 in 10.0 s. What is the power of the lift?