« previous next »

Author Question: Pumped storage facilities ________. a. increase the overall efficiency of a power plant b. make ... (Read 64 times)

lunatika

  • Hero Member
  • *****
  • Posts: 548
on: Jul 28, 2018
Pumped storage facilities ________.
 a. increase the overall efficiency of a power plant
  b. make use of the output of electricity from photovoltaic cells
  c. are used to produce electricity mainly at night
  d. have an increase in their potential energy mainly at night
  e. cannot be used with a nuclear plant

Question 2

A projectile is thrown from the top of a building with an initial velocity of 30 m/s in the horizontal direction. If the top of the building is 30 m above the ground, how fast will the projectile be moving just before it strikes the ground?
 a. 35 m/s
  b. 39 m/s
  c. 31 m/s
  d. 43 m/s
  e. 54 m/s


honnalora

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Hardware, Software, and Storage Components Hardware, Software, and Storage Components
A typical OBD-II data link connector (DLC). The location varies with make and model and may even be ... A typical OBD-II data link connector (DLC). The location varies with make and model and may even be ...
Each cell nucleus throughout the body contains the genes, DNA, and chromosomes that make up the ... Each cell nucleus throughout the body contains the genes, DNA, and chromosomes that make up the ...
The NFPA 704 marking system. This voluntary marking system is displayed at participating facilities ... The NFPA 704 marking system. This voluntary marking system is displayed at participating facilities ...
Biomass can be processed to make vehicle fuels Biomass can be processed to make vehicle fuels
Modern machinery has helped farmers increase yields Modern machinery has helped farmers increase yields
Video: Activation Energy - Valence Electrons

For a complete list of videos, visit our video library