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

Author Question: To drive a typical car at 40 mph on a level road for one hour requires about 3.2 107 J of energy. ... (Read 18 times)

09madisonrousseau09

  • Hero Member
  • *****
  • Posts: 559
on: Jul 29, 2018
To drive a typical car at 40 mph on a level road for one hour requires about 3.2  107 J of energy. Suppose we tried to store this much energy in a spinning, solid, uniform, cylindrical flywheel.
 
  A large flywheel cannot be spun too fast or it will fracture. If we used a flywheel of diameter 1.2 m and mass 400 kg, what angular speed would be required to store 3.2  107 J?
  A) 3600 rad/s B) 940 rad/s C) 530 rad/s D) 5500 rad/s E) 1800 rad/s

Question 2

Find the net work done by friction on a box that moves in a complete circle of radius 1.82m on a uniform horizontal floor. The coefficient of kinetic friction between the floor and the box is 0.25, and the box weighs 65.0N
 
  A) 1800 J B) 370 J C) 0 J D) 190 J
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

todom5090

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 29% of students answer this correctly


09madisonrousseau09

  • Member
  • Posts: 559
Reply 2 on: Jul 29, 2018
Wow, this really help

bbburns21

  • Member
  • Posts: 336
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

The philosophical journey requires self-examination. Your responsibility as a critical thinker is to The philosophical journey requires self-examination. Your responsibility as a critical thinker is to
Typical Reverse Osmosis Filter Setup Typical Reverse Osmosis Filter Setup
Typical box used for the disposal of bagged, sealed, and autoclaved biological waste. Typical box used for the disposal of bagged, sealed, and autoclaved biological waste.
Typical Startup Cost Categories Cont. Typical Startup Cost Categories Cont.
Typical characteristics of r-selected and k-selected species Typical characteristics of r-selected and k-selected species
World Total Energy Consumption by Fuel Type World Total Energy Consumption by Fuel Type
Video: Cellular Respiration & Glucose Mobilization (Glucose transport & Phosphorylation of Glucose)

For a complete list of videos, visit our video library