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

Author Question: A 1200-kg car is being raised at a constant speed if 25 cm/s by a crane, using a 20-m long steel ... (Read 24 times)

crazycityslicker

  • Hero Member
  • *****
  • Posts: 537
on: Jul 29, 2018
A 1200-kg car is being raised at a constant speed if 25 cm/s by a crane, using a 20-m long steel cable that is 1.5 cm in diameter. Young's modulus for steel is 2.0  1011 Pa. What is the change in length of the cable caused by the car?
 
  A) 6.7 mm
  B) 6.7 cm
  C) 3.3 mm
  D) 3.3 cm
  E) 3.3 m

Question 2

What are the wavelength and the corresponding photon energy (in electron-volts) of the primary light emitted by an ideal blackbody at each of the following temperatures? (c = 3.00  108 m/s, h = 6.626  10-34 J  s, 1 eV = 1.
 
  60  10-19 J, and the constant in Wein's law is 0.00290 m  K)
  (a) 400C?
  (b) 800C?
  (c) 1200C?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

strudel15

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

(a) 4.31 m, 0.288 eV (b) 2.70 m, 0.459 eV (c) 1.97 m, 0.631 eV


crazycityslicker

  • Member
  • Posts: 537
Reply 2 on: Jul 29, 2018
Wow, this really help

tkempin

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

A young Lipizzan at the Spanish Riding School in training equipment, wearing saddle, bridle and long A young Lipizzan at the Spanish Riding School in training equipment, wearing saddle, bridle and long
Priming Affects the Speed of Respones on a Lexical Decision Task Priming Affects the Speed of Respones on a Lexical Decision Task
A steady needle reading that rises 2 or 3 inches Hg when the engine speed is increased slightly ... A steady needle reading that rises 2 or 3 inches Hg when the engine speed is increased slightly ...
How Long Do You Ovulate After Your Period? How Long Do You Ovulate After Your Period?
A tightrope walker walks across a 30-m long wire tied between two poles. The center of the wire ... A tightrope walker walks across a 30-m long wire tied between two poles. The center of the wire ...
Write equilibrium constant expressions for the following reactions in terms of concentration: Write equilibrium constant expressions for the following reactions in terms of concentration:
Video: Energy inputs and release in glycolysis Animation

For a complete list of videos, visit our video library