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

Author Question: Sputnik I was launched into orbit around Earth in 1957. It had a perigee (the closest approach to ... (Read 97 times)

Redwolflake15

  • Hero Member
  • *****
  • Posts: 569
Sputnik I was launched into orbit around Earth in 1957. It had a perigee (the closest approach to Earth, measured from Earth's center) of 6.81  106 m and an apogee (the furthest point from Earth's center) of 7.53  106 m.
 
  What was its speed when it was at its perigee? The mass of Earth is 5.97  1024 kg and G = 6.67 x 10-11 Nm2/kg2. A)
 
  7.18  103 m/s
  B)
 
  7.84  103 m/s
  C)
 
  8.23  103 m/s
  D)
 
  11.0  103 m/s
  E)
 
  13.4  103 m/s

Question 2

An unknown resistor is wired in series with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery.
 
  If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained A)
 
  is less than the true resistance.
  B)
 
  is greater than the true resistance.
  C)
 
  is the true resistance.
  D)
 
  could be any of the given answers. It depends on other factors.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

af

  • Sr. Member
  • ****
  • Posts: 356
Answer to Question 1

B

Answer to Question 2

B




Redwolflake15

  • Member
  • Posts: 569
Reply 2 on: Jul 29, 2018
Wow, this really help


jordangronback

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Excellent

 

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

For a complete list of videos, visit our video library