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

Author Question: When an external resistor of resistance R1 = 14 is connected across the terminals of a battery, ... (Read 90 times)

Chloeellawright

  • Hero Member
  • *****
  • Posts: 588
on: Jul 29, 2018
When an external resistor of resistance R1 = 14  is connected across the terminals of a battery, there is a current of 6.0 A through the resistor.
 
  When a different external resistor of resistance R2 = 64.4  is connected instead, the current is 2.0 A. Calculate (a) the emf of the battery and (b) the internal resistance of the battery.

Question 2

During each cycle of operation, a refrigerator absorbs 230 J of energy from the freezer and expels 356 J of energy to the room. How much work input is required in each cycle?
 
  A) 712 J
  B) 586 J
  C) 460 J
  D) 126 J


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

yasmin

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 150 V (b) 11

Answer to Question 2

D


Chloeellawright

  • Member
  • Posts: 588
Reply 2 on: Jul 29, 2018
Excellent

tandmlomax84

  • Member
  • Posts: 323
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Range of Motion of the Hip Joint, Internal and External Rotation Range of Motion of the Hip Joint, Internal and External Rotation
Carbon-zinc Battery Carbon-zinc Battery
Touch the test light to the negative (–) terminal of the battery or a good engine ground to check ... Touch the test light to the negative (–) terminal of the battery or a good engine ground to check ...
SSRIs block the reuptake of serotonin into nerve terminals, resulting in increased serotonin levels. SSRIs block the reuptake of serotonin into nerve terminals, resulting in increased serotonin levels.
Two modes of gene amplification leading to drug resistance Two modes of gene amplification leading to drug resistance
Getting Connected Getting Connected
Video: Cardiac Cycle (Part 2 of 4)

For a complete list of videos, visit our video library