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

Author Question: A 50-kg box is being pushed along a horizontal surface. The coefficient of static friction between ... (Read 58 times)

tatyanajohnson

  • Hero Member
  • *****
  • Posts: 569
on: Jul 29, 2018
A 50-kg box is being pushed along a horizontal surface. The coefficient of static friction between the box and the ground is 0.65, and the coefficient of kinetic friction is 0.35.
 
  What horizontal force must be exerted on the box for it to accelerate at 1.2 m/s2?
  A) 230 N B) 60 N C) 120 N D) 170 N E) 490 N

Question 2

The average molecular kinetic energy of a gas can be determined by knowing
 
  A) only the number of molecules in the gas.
  B) only the volume of the gas.
  C) only the pressure of the gas.
  D) only the temperature of the gas.
  E) All of the above quantities must be known to determine the average molecular kinetic energy.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lindahyatt42

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

D


tatyanajohnson

  • Member
  • Posts: 569
Reply 2 on: Jul 29, 2018
Gracias!

patma1981

  • Member
  • Posts: 292
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Leaf surface features. Leaf surface features.
Parts of the Hand Used in Palpation; Palmar Surface Parts of the Hand Used in Palpation; Palmar Surface
Relations of Skull to Surface features Relations of Skull to Surface features
Anterior surface of the eye. Anterior surface of the eye.
Circular friction over attachments at knee. Apply with fingertips or palms. Circular friction over attachments at knee. Apply with fingertips or palms.
Press into points along the neck with your thumb, one side at a time. Apply circular friction to ... Press into points along the neck with your thumb, one side at a time. Apply circular friction to ...
Video: Elementary kinetics

For a complete list of videos, visit our video library