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

Author Question: A 7.0-kg block on a horizontal frictionless surface is attached to a light spring (force constant = ... (Read 1110 times)

V@ndy87

  • Hero Member
  • *****
  • Posts: 571
on: Aug 1, 2020

Question 1

A 6.0-kg block slides along a horizontal surface. If µk = 0.20 for the block and surface, at what rate is the friction force changing the mechanical energy of the block at an instant when its speed is 4.0 m/s?

◦
−59 W

◦
−47 W

◦
−71 W

◦
−82 W

◦
+71 W


Question 2

A 7.0-kg block on a horizontal frictionless surface is attached to a light spring (force constant = 1.2 kN/m). The block is initially at rest at its equilibrium position when a force of magnitude P acting parallel to the surface is applied to the block, as shown. When the block is 8.0 cm from the equilibrium position, it has a speed of 0.80 m/s. How much work is done on the block by the force P as the block moves the 8.0 cm?



◦
7.4 J

◦
5.4 J

◦
6.1 J

◦
6.7 J

◦
4.9 J
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by V@ndy87 on Aug 1, 2020

ebenov

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Aug 1, 2020
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 25% of students answer this correctly


V@ndy87

  • Member
  • Posts: 571
Reply 2 on: Aug 1, 2020
Wow, this really help

6ana001

  • Member
  • Posts: 311
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

A soil surface crust that includes nitrogen-fixing, soil-enriching cyanobacteria. A soil surface crust that includes nitrogen-fixing, soil-enriching cyanobacteria.
Muscle Strength of the Hip, Abduction with Opposing Force Muscle Strength of the Hip, Abduction with Opposing Force
Muscle Fiber Recruitment and Muscular Force Muscle Fiber Recruitment and Muscular Force
Landscape "Spring Fresco" Landscape "Spring Fresco"
Open pit mining creates immense holes at the surface Open pit mining creates immense holes at the surface
Light Vehicle Diesel Engines Light Vehicle Diesel Engines
Video: Multiple Sclerosis Animation

For a complete list of videos, visit our video library