This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: If a power plant is 30 efficient, and the transmission system that delivers power to consumers is 60 ... (Read 35 times)

ashley

  • Hero Member
  • *****
  • Posts: 584
on: Jul 29, 2018
If a power plant is 30 efficient, and the transmission system that delivers power to consumers is 60 efficient, then the overall efficiency is
 
  A) 90.
  B) 60.
  C) 30.
  D) 18.
  E) none of the above

Question 2

A 1-kg ball is released from a height of 6 m, and a 2-kg ball is released from a height of 3 m. Air resistance is negligible as they fall. Which of the following statements about these balls are correct? (There could be more than one correct choice).
 
  A) As they reach the ground, the 1-kg ball will have more kinetic energy than the 2-kg ball because it was dropped from a greater height.
  B) As they reach the ground, the 1-kg ball will be moving faster than the 2-kg ball.
  C) Both balls will reach the ground with the same speed.
  D) Both balls will reach the ground with the same kinetic energy.
  E) Both balls will take the same time to reach the ground.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bassamabas

  • Sr. Member
  • ****
  • Posts: 294
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: D

Answer to Question 2

B, D


ashley

  • Member
  • Posts: 584
Reply 2 on: Jul 29, 2018
Excellent

xoxo123

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

The Plant Cell Wall The Plant Cell Wall
The autonomic nervous system with its sympathetic and parasympathetic divisions The autonomic nervous system with its sympathetic and parasympathetic divisions
Block Diagram of Single-stage Pressure System for Dual-Stage Pressure Production of Nitric Acid Block Diagram of Single-stage Pressure System for Dual-Stage Pressure Production of Nitric Acid
The lymphatic system. The lymphatic system.
The primary ignition system is used to trigger and therefore create the secondary (high-voltage) ... The primary ignition system is used to trigger and therefore create the secondary (high-voltage) ...
A central port fuel-injection system. A central port fuel-injection system.
Video: Hypoglycemia Animation

For a complete list of videos, visit our video library