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

Author Question: A force of 200 N is applied to a 50-kg mass in the direction of motion for a distance of 6.0 m, and ... (Read 76 times)

danielfitts88

  • Hero Member
  • *****
  • Posts: 535
on: Jul 28, 2018
A force of 200 N is applied to a 50-kg mass in the direction of motion for a distance of 6.0 m, and then the force is increased to 300 N for the next 5.0 m. For the 11 m of travel, how much work is done by the varying force?
 a. 2700 J
  b. 1500 J
  c. 2400 J
  d. -1200 J

Question 2

A system is acted on by its surroundings in such a way that it receives 50 J of heat while simultaneously doing 70 J of work. What is its net change in internal energy?
 a. 70 J
  c. zero
  b. -20 J
  d. 20 J


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

helenmarkerine

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

B


danielfitts88

  • Member
  • Posts: 535
Reply 2 on: Jul 28, 2018
Wow, this really help

nyrave

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

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

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Spectral Line Motion in Binary Star Systems Spectral Line Motion in Binary Star Systems
Find the magnitude and the direction of the resultant vector of the two vectors below: Find the magnitude and the direction of the resultant vector of the two vectors below:
An unknown gas occupies a volume of 1.50 L at 21 °C and 0.950 atm. If the mass i An unknown gas occupies a volume of 1.50 L at 21 °C and 0.950 atm. If the mass i
Mass spectrometry (MS) patterns for a trypsin-digested peptide sequence Mass spectrometry (MS) patterns for a trypsin-digested peptide sequence
Mass spectrometry of a synthetic version of collagen peptide Mass spectrometry of a synthetic version of collagen peptide
Question about Resultant of gravitational force? Question about Resultant of gravitational force?
Video: Glucose Evaluation Procedure

For a complete list of videos, visit our video library