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

Author Question: An electric car is designed to run off a bank of 12-V batteries with total energy storage of 6.0 ... (Read 72 times)

crobinson2013

  • Hero Member
  • *****
  • Posts: 535
on: Jul 28, 2018
An electric car is designed to run off a bank of 12-V batteries with total energy storage of 6.0  107 J. If the electric motor draws 6000 W in moving the car at a steady speed of 10 m/s, how far will the car go before it is out of juice?
 a. 150 km
  c. 100 km
  b. 50 km
  d. 25 km

Question 2

A figure skater on ice with arms extended, spins at a rate of 3.5 rev/s. After he draws his arms in, he spins at 6.0 rev/s. By what factor does the skater's kinetic energy change when he draws his arms in?
 a. 2.4
  c. 0.58
  b. 1.7
  d. 0.12


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

SeanoH09

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


crobinson2013

  • Member
  • Posts: 535
Reply 2 on: Jul 28, 2018
Gracias!

recede

  • Member
  • Posts: 315
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Energy of Electron according to Electron Shells Energy of Electron according to Electron Shells
Activation energy of uncatalyzed and catalyzed chemical reactions Activation energy of uncatalyzed and catalyzed chemical reactions
Number and label designations for oxygen sensors. Bank 1 is the bank where cylinder number 1 is ... Number and label designations for oxygen sensors. Bank 1 is the bank where cylinder number 1 is ...
Tummy rock to release energy blocks in the torso and head. Tummy rock to release energy blocks in the torso and head.
World Total Energy Consumption by Fuel Type World Total Energy Consumption by Fuel Type
Energy requirements of an uncatalyzed versus an enzymatically catalyzed chemical reaction Energy requirements of an uncatalyzed versus an enzymatically catalyzed chemical reaction
Video: Energy inputs and release in glycolysis Animation

For a complete list of videos, visit our video library