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

Author Question: A 10-m plank with a mass of 80 kg is being moved by rolling it over two cylindrical logs, each with ... (Read 18 times)

joe

  • Hero Member
  • *****
  • Posts: 627
on: Jul 29, 2018
A 10-m plank with a mass of 80 kg is being moved by rolling it over two cylindrical logs, each with a mass of 10 kg and a radius of 20 cm, placed 2 m from either end of the plank.
 
  As the plank is pushed, the logs roll on the ground without slipping, and the plank does not slip on the rollers. A force of 250 N is applied to the plank. What is the speed of the plank after it has moved 2 m, starting from rest? A) 1.87 m/s
  B) 2.53 m/s
  C) 3.43 m/s
  D) 3.54 m/s
  E) 2.37 m/s

Question 2

The power rating of a resistor is 0.800 W. The value of the resistor is 400 . (a) What is the maximum voltage? (b) What is the maximum current it can draw?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ntsoane kedibone

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

(a) 17.9 V
(b) 45 mA


joe

  • Hero Member
  • *****
  • Posts: 627
Reply #2 on: Jul 29, 2018
Thanks


ntsoane kedibone

  • Sr. Member
  • ****
  • Posts: 333
Reply #3 on: Jul 29, 2018
Welcome :)


« previous next »
 

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

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?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Prostate cancer. In this example, a large mass has grown into the urinary bladder. Prostate cancer i Prostate cancer. In this example, a large mass has grown into the urinary bladder. Prostate cancer i
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
Leaf-rolling weevil Leaf-rolling weevil
Rolling stone in Mars Rolling stone in Mars
A farmer is building a new cylindrical silo that will hold 1800 cm3 of corn. Wha A farmer is building a new cylindrical silo that will hold 1800 cm3 of corn. Wha
An empty spice bottle has an inner volume of 1.31 10-4 m3 . It has a mass of 112 g when filled ... An empty spice bottle has an inner volume of 1.31 10-4 m3 . It has a mass of 112 g when filled ...
Video: Resting membrane potential - electrical polarity and maintenance requirements

For a complete list of videos, visit our video library