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

Author Question: An amount of work equal to 2.0 J is required to compress the spring in a spring-gun. What is the ... (Read 20 times)

pane00

  • Hero Member
  • *****
  • Posts: 579
on: Jul 28, 2018
An amount of work equal to 2.0 J is required to compress the spring in a spring-gun. What is the launch speed of a 26.0-g marble?
 a. 12.4 m/s
  b. 13.4 m/s
  c. 8.8 m/s
  d. 3.92 m/s
  e. 0.392 m/s

Question 2

A 2.50-kg projectile is launched at an angle of 20.0 above the horizontal with an initial speed of 100 m/s from the top of a building 40 m high. If the projectile is traveling 85.0 m/s at its maximum height of 47.0 m, how much work has been done on the projectile by air friction?
 a. 3.3E+3 J
  b. 1.7E+2 J
  c. 3.5E+3 J
  d. 2.4E+4 J


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

dmurph1496

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 28, 2018
Answer to Question 1

a

Answer to Question 2

a


pane00

  • Member
  • Posts: 579
Reply 2 on: Jul 28, 2018
:D TYSM

mochi09

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Bayliss and Starling discovered the mechanism by which the small intestine and pancreas work togethe Bayliss and Starling discovered the mechanism by which the small intestine and pancreas work togethe
Ford spring-lock connectors require a special tool for disassembly. Ford spring-lock connectors require a special tool for disassembly.
Many hunger-relief programs work to provide food aid to needy nations Many hunger-relief programs work to provide food aid to needy nations
Earth-Moon-Sun Positions during the Spring Tide Earth-Moon-Sun Positions during the Spring Tide
What is the minimal voltage required? What is the minimal voltage required?
Easter spring Easter spring
Video: Types of synapses - electrical & chemical

For a complete list of videos, visit our video library