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

Author Question: A physics professor pushes against a stationary wall, working up a sweat. Is he doing any actual ... (Read 41 times)

asmith134

  • Hero Member
  • *****
  • Posts: 576
on: Jul 29, 2018
A physics professor pushes against a stationary wall, working up a sweat. Is he doing any actual physical work on the wall?
 
  A) No--it's a law of nature that physics profs never do any actual work.
  B) No, because the force by his hands against the wall is balanced by the force by the wall pushing back.
  C) Yes, because he is exerting a force against the wall during a period of time.
  D) No, because the wall is not moving.
  E) Yes, because his arm muscles are moving other muscles through a distance.

Question 2

A projectile is fired from ground level with a speed of 150 m/s at an angle 30 above the horizontal on an airless planet where g = 10.0 m/s2. What is the horizontal component of its velocity after 4.0 s?
 
  A) 38 m/s B) 75 m/s C) 150 m/s D) 130 m/s E) 35 m/s
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nickk12214

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 29, 2018
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


asmith134

  • Member
  • Posts: 576
Reply 2 on: Jul 29, 2018
Excellent

Dnite

  • Member
  • Posts: 297
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Abruptio placentae. The placenta becomes prematurely detached from the uterine wall. Abruptio placentae. The placenta becomes prematurely detached from the uterine wall.
Hubbard’s Predication of Peak in U.S Oil Production with Actual Data Hubbard’s Predication of Peak in U.S Oil Production with Actual Data
Solution to Physics problem Solution to Physics problem
Physics - Density, Pressure, and Pascal's Principle Physics - Density, Pressure, and Pascal's Principle
Physics Physics
Physics Physics
Video: Nervous pathway to the Neuromuscular (NMJ)

For a complete list of videos, visit our video library