« previous next »

Author Question: Why won't a transformer work (stepup or stepdown potential) if a battery is connected across the ... (Read 28 times)

skymedlock

  • Hero Member
  • *****
  • Posts: 561
on: Jul 27, 2018
Why won't a transformer work (stepup or stepdown potential) if a battery is connected across the input?
 
  What will be an ideal response?

Question 2

The heat of fusion of lead is 5.9 kcal/kg, the heat of vaporization is 207. cal/kg, and its melting point is 328C. How much heat is required to melt 50. g of lead initially at 23C? (The specific heat of lead is 0.031 kcal/kg-C.)
 
  What will be an ideal response?


T4T

  • Sr. Member
  • ****
  • Posts: 348
Reply #1 on: Jul 27, 2018
Answer to Question 1

It works by induction, but a battery produces constant current and constant flux.

Answer to Question 2

0.77 kcal


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

An Oral, Battery-Operated Thermometer An Oral, Battery-Operated Thermometer
A poster encourages women to work in munitions to support the war effort. A poster encourages women to work in munitions to support the war effort.
Voltmeter showing the battery voltage when the headlights were on (engine off) for one minute. Voltmeter showing the battery voltage when the headlights were on (engine off) for one minute.
Resting Membrane Potential: Voltage Difference Resting Membrane Potential: Voltage Difference
Work on two blocks Work on two blocks
Gravitational Potential Energy Gravitational Potential Energy
Video: Calvin Cycle Explained!

For a complete list of videos, visit our video library