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

Author Question: A microscope has an objective lens of focal length 1.40 mm and an eyepiece of focal length 20.00 mm. ... (Read 244 times)

elizabeth18

  • Hero Member
  • *****
  • Posts: 559
on: Jul 29, 2018
A microscope has an objective lens of focal length 1.40 mm and an eyepiece of focal length 20.00 mm. It is adjusted for minimum eyestrain for persons with a near point of 25.0 cm. A blood sample is placed 1.50 mm from the objective.
 
  How far apart are the lenses? A) 20 mm
  B) 21 mm
  C) 23 mm
  D) 41 mm

Question 2

A tracking station on Earth observes a rocket move away at 0.370c. This rocket is designed to launch a projectile at 0.505c relative to the rocket.
 
  What speed (in terms of the speed of light) does the tracking station measure for the projectile if it is fired (a) straight ahead of the rocket or (b) backward from the rocket?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

honnalora

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

(a) 0.737c (b) 0.166c


elizabeth18

  • Member
  • Posts: 559
Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

pangili4

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Insects Under the Electron Microscope Insects Under the Electron Microscope
Strawberry Image From a Scanning Electron Microscope Strawberry Image From a Scanning Electron Microscope
LENS PAPER LENS PAPER
Gently squeeze along the length of each toe. Move proximal to distal. Squeeze top and bottom first, ... Gently squeeze along the length of each toe. Move proximal to distal. Squeeze top and bottom first, ...
What is the length of the staircase? What is the length of the staircase?
(a) A metaphase array of chromosomes as viewed in the microscope. (b) The computer-derived karyotype (a) A metaphase array of chromosomes as viewed in the microscope. (b) The computer-derived karyotype
Video: Cortisol (protein catabolism, gluconeogenesis, vasoconstriction & anti-inflammation)

For a complete list of videos, visit our video library