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

Author Question: The weight of spaceman Speff at the surface of planet X, solely due to its gravitational pull, is ... (Read 58 times)

future617RT

  • Hero Member
  • *****
  • Posts: 543
on: Jul 29, 2018
The weight of spaceman Speff at the surface of planet X, solely due to its gravitational pull, is 389 N. If he moves to a distance of 1.86  104 km above the planet's surface, his weight changes to 24.31 N.
 
  What is the mass of planet X, if Speff's mass is 75.0 kg? (G = 6.67  10-11 N  m2/kg2) A) 2.99  1024 kg
  B) 2.99  1018 kg
  C) 2.99  1017 kg
  D) 1.59  1018 kg

Question 2

When a fixed amount of ideal gas goes through an isothermal expansion
 
  A) its internal (thermal) energy does not change.
  B) the gas does no work.
  C) no heat enters or leaves the gas.
  D) its temperature must decrease.
  E) its pressure must increase.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fur

  • Sr. Member
  • ****
  • Posts: 309
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

A


future617RT

  • Member
  • Posts: 543
Reply 2 on: Jul 29, 2018
Excellent

Hdosisshsbshs

  • Member
  • Posts: 315
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Surface Tension Surface Tension
Planet George Planet George
West nomogram for estimation of surface areas. West nomogram for estimation of surface areas.
Winds Aloft and Near the Surface: Gradient Flow Winds Aloft and Near the Surface: Gradient Flow
A Changing Planet — 1e A Changing Planet — 1e
QTL Analysis of Tomato Weight in Backcross Progeny QTL Analysis of Tomato Weight in Backcross Progeny
Video: Neuron Structure Animation

For a complete list of videos, visit our video library