« previous next »

Author Question: The resistance of a platinum wire is to be calibrated for low-temperature work. A platinum wire with ... (Read 135 times)

deesands

  • Hero Member
  • *****
  • Posts: 514
on: Jul 28, 2018
The resistance of a platinum wire is to be calibrated for low-temperature work. A platinum wire with resistance 2.000 W at 20C is immersed in liquid nitrogen at 77 K (-196C). If the temperature response of the platinum wire is linear, what is the expected resistance of the platinum wire at -196C? aplatinum = 3.92  10-3 (C)-1.
 a. 0.153 W
  c. 3.69 W
  b. 1.768 W
  d. 0.307 W

Question 2

How deep under the surface of a lake would the pressure be triple that at the surface? (1 atm = 1.01  105 Pa)
 a. 1.00 m
  c. 10.3 m
  b. 9.80 m
  d. 20.6 m


cpetit11

  • Sr. Member
  • ****
  • Posts: 321
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

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 typical pedestal grinder with a wire wheel on the left side and a stone wheel on the right side. ... A typical pedestal grinder with a wire wheel on the left side and a stone wheel on the right side. ...
Controls of Temperature Controls of Temperature
Daily Variations in Temperature and Relative Humidity Daily Variations in Temperature and Relative Humidity
It’s Easy To Look Sharp When You Haven’t Done Any Work It’s Easy To Look Sharp When You Haven’t Done Any Work
Introduction to Disease Resistance Introduction to Disease Resistance
A melting profile shows the increase in UV absorption versus temperature A melting profile shows the increase in UV absorption versus temperature
Video: Import of Dietary Glucose from Intestines to Bloodstream

For a complete list of videos, visit our video library