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 17 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?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

The Mass-Luminosity Relation The Mass-Luminosity Relation
Mass Exchange Between Close Binary Stars Mass Exchange Between Close Binary Stars
Advection of an air mass with a different ELR (environmental lapse rate). Advection of an air mass with a different ELR (environmental lapse rate).
How many grams of tartaric acid, H2C4H4O6, (molar mass = 150.10 g) are needed to How many grams of tartaric acid, H2C4H4O6, (molar mass = 150.10 g) are needed to
Given that sodium chloride is 39.0% sodium by mass, how many grams of sodium chl Given that sodium chloride is 39.0% sodium by mass, how many grams of sodium chl
For toluene (shown below), you would expect to see which m/z fragment in the mass spectrum? For toluene (shown below), you would expect to see which m/z fragment in the mass spectrum?
Video: Mechanisms of capillary exchange

For a complete list of videos, visit our video library