« previous next »

Author Question: A very light ideal spring having a spring constant (force constant) of 8.2 N/cm is used to lift a ... (Read 111 times)

shofmannx20

  • Hero Member
  • *****
  • Posts: 562
on: Jul 29, 2018
A very light ideal spring having a spring constant (force constant) of 8.2 N/cm is used to lift a 2.2-kg tool with an upward acceleration of 3.25 m/s2.
 
  If the spring has negligible length when it us not stretched, how long is it while it is pulling the tool upward?

Question 2

The Bohr radius of the hydrogen atom is 0.529  10-10 m. What is the radius of the n = 2 state?
 
  A) 0.265  10-10 m
  B) 4.23  10-10 m
  C) 1.06  10-10 m
  D) 2.12  10-10 m
  E) 0.529  10-10 m


JaynaD87

  • Sr. Member
  • ****
  • Posts: 368
Reply #1 on: Jul 29, 2018
Answer to Question 1

3.5 cm

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Did you know?

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

Carolina Spring Beauty Carolina Spring Beauty
Average Hourly Earnings of U.S. Workers in Current and Constant Dollars Average Hourly Earnings of U.S. Workers in Current and Constant Dollars
Most newer vehicles have a triangle symbol indicating the recommended hoisting lift location. Most newer vehicles have a triangle symbol indicating the recommended hoisting lift location.
Slap the foot bottom with the back of the hand. Rapid, light slaps create a stimulating sensation. Slap the foot bottom with the back of the hand. Rapid, light slaps create a stimulating sensation.
Predators adapt to extreme water pressure and the absence of light Predators adapt to extreme water pressure and the absence of light
1) (a) What is Coulomb?s Law? (b) Find the net electrostatic force on the charge labeled ?P? in ... 1) (a) What is Coulomb?s Law? (b) Find the net electrostatic force on the charge labeled ?P? in ...
Video: Epinephrine/NE (heart rate, altered blood flow, glycogenolysis & bronchodilation)

For a complete list of videos, visit our video library