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

Author Question: Star 1 is approaching the Earth with speed v. Star 2 is receding from the Earth with the same speed ... (Read 115 times)

anshika

  • Hero Member
  • *****
  • Posts: 510
on: Jul 28, 2018
Star 1 is approaching the Earth with speed v. Star 2 is receding from the Earth with the same speed v. Measurements of the same spectral line from each of the stars show Doppler shifts in frequency. The light from which star will have the larger magnitude shift in frequency?
 a. star 1
  b. Both stars will have the same shift.
  c. The value of the speed must be known before an answer can be found. d. star 2

Question 2

Pennies used to be made of copper, but now they are made of copper-coated zinc. If one were to do a precise calorimetry experiment to determine the specific heat of the new pennies, what would be the result to be?
 a. It would be that of copper since copper is on the outside.
  b. It would be that of zinc since zinc is in the center.
  c. It would be the sum of the copper and zinc specific heats.
  d. It would be between that of copper and that of zinc, depending on coating thickness.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ebonylittles

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

D


anshika

  • Member
  • Posts: 510
Reply 2 on: Jul 28, 2018
Wow, this really help

billybob123

  • Member
  • Posts: 336
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Body plan of an echinoderm, as represented by a sea star. Body plan of an echinoderm, as represented by a sea star.
Star-nosed mole Star-nosed mole
Uranus revolves around the Sun once every 84 Earth years. Its average distance from the Sun is rough Uranus revolves around the Sun once every 84 Earth years. Its average distance from the Sun is rough
Earth, water, air Earth, water, air
Flexible cooling fan blades change shape as the engine speed changes. Flexible cooling fan blades change shape as the engine speed changes.
Gravitational Potential Energy for the Earth problem Gravitational Potential Energy for the Earth problem
Video: Regulation of GFR: autoregulation via tubuloglomerular feedback, neural & hormonal regulation

For a complete list of videos, visit our video library