This topic contains a solution. Click here to go to the answer

Author Question: A small dust particle of mass 7.90 10-6 g is being observed under a magnifying lens. Its ... (Read 50 times)

codyclark

  • Hero Member
  • *****
  • Posts: 538
A small dust particle of mass 7.90  10-6 g is being observed under a magnifying lens.
 
  Its position is determined to within 0.0050 mm. (1 y = 3.156  107, h = 1.055  10-34 J  s)
  (a) Find the minimum uncertainty in its velocity implied by the uncertainty in its position.
  (b) Assuming the dust particle is moving at the speed you just found, how many years would it take for the particle to move 1.0 mm?

Question 2

A galvanometer with a coil resistance of 80  deflects full-scale for a current of 2.0 mA. What series resistance is required to convert it to a voltmeter reading full scale for 200 V.
 
  A) 100 m B) 13 M C) 250 k D) 0.80 m E) 100 k



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

akudia

  • Sr. Member
  • ****
  • Posts: 347
Answer to Question 1

(a) 2.7  10-21 m/s (b) 1.2  1010 y

Answer to Question 2

E




codyclark

  • Member
  • Posts: 538
Reply 2 on: Jul 29, 2018
Wow, this really help


Dinolord

  • Member
  • Posts: 313
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

For a complete list of videos, visit our video library