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

Author Question: An open freight car rolls friction-free along a horizontal track in vertically pouring rain. As ... (Read 72 times)

jCorn1234

  • Hero Member
  • *****
  • Posts: 545
on: Jul 29, 2018
An open freight car rolls friction-free along a horizontal track in vertically pouring rain. As water accumulates in the car, its speed
 
  A) increases.
  B) decreases.
  C) doesn't change.

Question 2

Which of the following is considered by scientists to be physically real, but yet is not made of atoms or of other material particles such as protons, electrons, etc.?
 
  A) the air
  B) neutron stars
  C) electromagnetic fields
  D) the ether
  E) Nonsense--we have known since Democritus that everything is made only of atoms and empty space.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ebenov

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

C


jCorn1234

  • Member
  • Posts: 545
Reply 2 on: Jul 29, 2018
Wow, this really help

billybob123

  • Member
  • Posts: 336
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

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?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

The jaguar can range across a variety of forested and open habitat, but is strongly associated with The jaguar can range across a variety of forested and open habitat, but is strongly associated with
Formation of Acid Rain Formation of Acid Rain
a) Lunge with your legs open to the table. b) Avoid lunging with your legs close to table. a) Lunge with your legs open to the table. b) Avoid lunging with your legs close to table.
Plasma protein binding and drug availability. (a) Drug exists in a free state or bound to plasma ... Plasma protein binding and drug availability. (a) Drug exists in a free state or bound to plasma ...
Press into points along the neck with your thumb, one side at a time. Apply circular friction to ... Press into points along the neck with your thumb, one side at a time. Apply circular friction to ...
Open and closed comedones of acne Open and closed comedones of acne
Video: How to make cDNA Animation

For a complete list of videos, visit our video library