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

Author Question: A 0.30-kg block of wood is suspended on a spring. In equilibrium the wood stretches the spring 2.0 ... (Read 131 times)

awywial

  • Hero Member
  • *****
  • Posts: 577
on: Jul 29, 2018
A 0.30-kg block of wood is suspended on a spring. In equilibrium the wood stretches the spring 2.0 cm downward.
 
  The wood is then pulled an additional distance of 1.0 cm down and released from rest.
  (a) How long does it take the wood to make 3 complete cycles of vibration?
  (b) How much total mechanical energy does this system contain if we choose the total potential energy (elastic and gravitational) to be zero at the equilibrium position of the hanging block?

Question 2

A beaker of negligible heat capacity contains 456 g of ice at -25.0C. A lab technician begins to supply thermal energy through the process of heating to the container at the rate of 1000 J/min.
 
  How long after starting will the ice begin to melt, assuming all of the ice has the same temperature? The specific heat of ice is 2090 J/kg  K and the latent heat of fusion of water is 33.5  104 J/kg.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

joanwhite

  • Sr. Member
  • ****
  • Posts: 308
Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 0.84 s (b) 7.4 mJ

Answer to Question 2

23.8 min


awywial

  • Member
  • Posts: 577
Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

ghepp

  • Member
  • Posts: 361
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

giant wood spider giant wood spider
This 1795 engraving of a Stamp Act protest delineates a class division. The three British Tories—one This 1795 engraving of a Stamp Act protest delineates a class division. The three British Tories—one
The bimetallic temperature sensor spring controls the amount of silicone that is allowed into the ... The bimetallic temperature sensor spring controls the amount of silicone that is allowed into the ...
A capless system from a Ford Flex does not use a replaceable cap and instead is spring-loaded ... A capless system from a Ford Flex does not use a replaceable cap and instead is spring-loaded ...
Apply neck stretches. Lift the head with two hands to apply (A) rotations, (B) lateral flexion, and ... Apply neck stretches. Lift the head with two hands to apply (A) rotations, (B) lateral flexion, and ...
The dissociation equilibrium constants for the protonated form of alanine (a diprotic amino ... The dissociation equilibrium constants for the protonated form of alanine (a diprotic amino ...
Video: Eczema

For a complete list of videos, visit our video library