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

Author Question: A 900-kg car traveling 30.0 south of east at 12.0 m/s suddenly collides with a 750-kg car traveling ... (Read 124 times)

vicky

  • Hero Member
  • *****
  • Posts: 586
on: Jul 29, 2018
A 900-kg car traveling 30.0 south of east at 12.0 m/s suddenly collides with a 750-kg car traveling north at 17.0 m/s.
 
  The cars stick together after colliding. What is the speed of the wreckage just after the collision?
  A) 7.21 m/s
  B) 12.2 m/s
  C) 20.4 m/s
  D) 25.0 m/s
  E) 17.3 m/s

Question 2

An electron and a positron, both essentially at rest, annihilate each other, emitting two identical photons in the process.
 
  What is the wavelength of these photons? The mass of an electron or positron is 9.11  10-31 kg. (h = 6.626  10-34 J  s, c = 3.00  108 m/s)
  A) 3.07 pm
  B) 1.21  10-12 pm
  C) 2.42 pm
  D) 1.73 pm
  E) 3.46 pm
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

BAOCHAU2803

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


vicky

  • Hero Member
  • *****
  • Posts: 586
Reply #2 on: Jul 29, 2018
TY


BAOCHAU2803

  • Sr. Member
  • ****
  • Posts: 316
Reply #3 on: Jul 29, 2018
You're welcome


« previous next »
 

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

lion cubs in the wild, South Africa lion cubs in the wild, South Africa
Amundsen-Scott South Pole Station in Antarctica Amundsen-Scott South Pole Station in Antarctica
The Kingsley plantation, on Fort George Island in Jacksonville, Florida. Zephaniah Kingsley, the own The Kingsley plantation, on Fort George Island in Jacksonville, Florida. Zephaniah Kingsley, the own
A family of African Americans arrive in Chicago, migrants from the American South, in an exodus that A family of African Americans arrive in Chicago, migrants from the American South, in an exodus that
Rose window, south transept, Chartres Cathedral. Rose window, south transept, Chartres Cathedral.
A thin laser beam traveling in air strikes the surface of a glass plate at 41.2° with the ... A thin laser beam traveling in air strikes the surface of a glass plate at 41.2° with the ...
Video: Hormonal regulation of blood pressure - RAA system

For a complete list of videos, visit our video library