« previous next »

Author Question: A mass of 3.0 kg rests on a smooth surface inclined 34 above the horizontal. It is kept from sliding ... (Read 60 times)

cartlidgeashley

  • Hero Member
  • *****
  • Posts: 572
on: Jul 29, 2018
A mass of 3.0 kg rests on a smooth surface inclined 34 above the horizontal. It is kept from sliding down the plane by a spring attached to a wall. The spring is aligned with the plane and has a spring constant of 120 N/m.
 
  How much does the spring stretch? A) 360 cm
  B) 240 cm
  C) 14 cm
  D) 24 cm
  E) 36 cm

Question 2

Earth's interior is warmed by ________ and Earth's surface is warmed by ________.
 
  A) radioactive processes; fusion in the Sun
  B) fission; fossil fuels
  C) volcanoes; solar energy
  D) terrestrial radiation; terrestrial radiation


Liddy

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

Answer: A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

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 magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do
Migration of Surface Cyclones Relative to Rossby Waves Migration of Surface Cyclones Relative to Rossby Waves
Air-Mass Thunderstorms Air-Mass Thunderstorms
Cell Surface Regulators Cell Surface Regulators
Warm-up (5 minutes). Warm up the soft tissues of the feet with a variety of kneading, sliding, and ... Warm-up (5 minutes). Warm up the soft tissues of the feet with a variety of kneading, sliding, and ...
Smooth,glossy tongue (atrophic glossitis) Smooth,glossy tongue (atrophic glossitis)
Video: Embryonic development - Week 4

For a complete list of videos, visit our video library