Frictional force Study guides, Study notes & Summaries

A 50-kg crate is pulled 40 m along a horizontal floor by a constant force exerted by a person. The applied force is 100 N, which acts at a 37 degree angle wrt the horizontal. The floor is rough and exerts a frictional force of 50 N. a. Determine the work done by each force acting on the crate. b. Determine the net work done on the crate. correct answersa. -work done by the person - WF = F * x * cos(theta) WF = 100 * 40 * cos(37) WF = 3194.54 J the work done by the applied force is 31...

1. Proteins necessary for body's mainte- nance, growth, and repair (GS) 2. Carbohydrates and Fats used primarily for energy (GS) 3. 212 Water boils at degrees fahrenheit (GS) 4. 100 Water boils at degrees Cel- sius (GS) 5. 373 Water boils at Ks on the Kelvin scale (GS) 6. Veins carry blood from capillaries toward the heart. (GS) 7. Arteries carry blood away from the heart. (GS) 8. Ventricles lower chamber of the heart (GS) 9. Red Blood Cells component of blood which car- ri...

Picat Verification Test (Latest 2023/ 2024) | Questions and Verified Answers| Grade A Q: As piston P moves up in the direction shown, lever Q? Answer: Does not move Q: Four weights are tied together and hung from the ceiling. What will be the tensions in the cord at the point labeled? Answer: 60 pounds Q: What would you tell the person who is trying to loosen the rusty nut with the wrench? Answer: Move your hand farther from the nut Q: A car stops sudden...

What is the labor force? CORRECT ANSWER the sum of employed and unemployed workers in the economy; it includes adult (16+) non-institutional civilian population What does "not in the labor force" mean? CORRECT ANSWER they currently do not have a job and they are not currently actively looking for a job what are the to kinds of people included in the labor force? CORRECT ANSWER unemployed and employed what does it mean to be unemployed CORRECT ANSWER someone who is not working but is cur...

Praxis 5442 Middle School Practice Questions with Complete Solutions A book is at rest on a tabletop. A teacher asks students to sketch the forces exerted on the book. Which of the following student diagrams best depicts all the forces exerted on the book? For an object at rest, forces must be balanced. The student diagram correctly depicts the balanced forces acting on the book, the force of gravity directed downward, and the force exerted by the table directed upward. A certain spec...

WX 201 Exam 3 with correct Answers The contour lines drawn on a 500 mb chart are lines of constant height The unit of pressure most commonly found on a surface weather map is millibars or hectopascals Isobaric surfaces are ____ in warm, less-dense air and ____in cold, more-dense air. higher; lower Because of friction, surface winds move ____ winds aloft with the same pressure gradient. more slowly than The pressure gradient force is directed from higher pressure toward l...

Which of the following is included in GDP? A. recreational marijuana purchased from a drug dealer by a college student? B. Recreational marijuana purchased and consumber by a man in his attic. C. medical marijuana purchased from a government-run pharmacy by a glaucoma patient. D. All of the above - correct answer C. medical marijuana purchased from a government-run pharmacy by a glaucoma patient. you know a candy bar cost five cents in 1962. You also know the CPI for 1962 and the CPI to...

StraighterLine PHY 250 General Physics All Graded Exams PHY250_TW | Chapter 3: Dynamics Started on Sunday, April 26, 2020, 7:31 PM State Finished Completed on Sunday, April 26, 2020, 8:27 PM Time taken 55 mins 26 secs Grade 132.00 out of 150.00 (88%) Feedback You’re off to a good start. A course grade of 70% is required to request a transcript. You’ve met that for the first exam already, but if you want to reattempt for a higher grade you can retake this assessment ...

PHY 250 General Physics I All Graded Exams 2023/2024 100%Verified and Updated by Expert . Question 1 Correct 6.00 points out of 6.00 What is the acceleration of a skydiver at terminal velocity whose mass is 80 kg and cross-sectional area is 14 m2 . The density of the air he is falling through is 0.9984 g / m 3 . The drag coe_cient has a value of 0.485. Select one: a. 15.2 m / sec2 b. 56.4 m / sec2 c. 0 m / sec2 d. 481 m / sec2 e. None of the above Question 2 Incorrect 0.00 poin...

FE Electrical Exam Complete Solutions With Latest Questions And Answers 2024 A+. Define Enthalpy Correct Answer: total energy of a system Which of the following is true of the electric field intensity about an isolated point charge? A. It varies directly as the distance to the charge. B. It varies inversely as the distance to the charge. C. It varies directly as the square of the distance to the charge. D. It varies inversely as the square of the distance to the charge. Correct Answer: D. ...