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

Author Question: Earth is closer to the Sun in winter than in summer. The orbital speed of Earth about the Sun is ... (Read 21 times)

Mollykgkg

  • Hero Member
  • *****
  • Posts: 529
Earth is closer to the Sun in winter than in summer. The orbital speed of Earth about the Sun is therefore faster during the
 
  1) summer.
  2) winter.
  3) is the same for all seasons.
 
  Correspondingly, the gravitational force between the Sun and Earth is strongest during
  4) summer.
  5) winter.
  6) is the same for all seasons.

Question 2

A projectile is launched vertically upward at 40 m/s. If air resistance is negligible, its speed upon returning to its starting point is
 
  1) less than 40 m/s.
  2) 40 m/s.
  3) more than 40 m/s.
 
  All along the ball's trajectory, its acceleration is
  4) g downward.
  5) g at an angle.
  6) zero.
 
  If air resistance does affect motion, then the ball's speed upon returning to its starting point is
  7) less than 50 m/s.
  8) 50 m/s.
  9) more than 50 m/s.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

vickyvicksss

  • Sr. Member
  • ****
  • Posts: 351
Answer to Question 1

Answer: 2, 5

Answer to Question 2

Answer: 2, 4, 7




Mollykgkg

  • Member
  • Posts: 529
Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review


bitingbit

  • Member
  • Posts: 323
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

For a complete list of videos, visit our video library