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

Author Question: Metal detectors that locate metal beneath sand on a beach are activated by A) electric fields. ... (Read 79 times)

Engineer

  • Hero Member
  • *****
  • Posts: 527
on: Jul 29, 2018
Metal detectors that locate metal beneath sand on a beach are activated by
 
  A) electric fields.
  B) magnetic fields.
  C) electromagnetic induction.
  D) alternating current.

Question 2

When a bar magnet is thrust at the same speed into a coil having twice the number of loops, the induced voltage is
 
  A) half.
  B) the same, no different.
  C) twice as much.
  D) four times as much.
  E) none of the above


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

xiaomengxian

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: C


Engineer

  • Member
  • Posts: 527
Reply 2 on: Jul 29, 2018
Excellent

alexanderhamilton

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Inspect the site for potential veins to use and palpate to further locate a vein and test the firmne Inspect the site for potential veins to use and palpate to further locate a vein and test the firmne
An electric sphygmomanometer. An electric sphygmomanometer.
Spring-activated lancet. Spring-activated lancet.
Oil molecules cling to metal surfaces but easily slide against each other. Oil molecules cling to metal surfaces but easily slide against each other.
Some Ford metal line connections use springlocks and O-rings. Some Ford metal line connections use springlocks and O-rings.
To check to see if the electric fuel pump can be operated from the relay contacts, use a fused ... To check to see if the electric fuel pump can be operated from the relay contacts, use a fused ...
Video: Mycobacterium tuberculosis: Drug Resistance and Natural Selection

For a complete list of videos, visit our video library