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 126 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?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

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.

East Africa-Arabia: An Example of Modern Rifting East Africa-Arabia: An Example of Modern Rifting
The site of Gladysvale in South Africa is excavated for Australopithecus remains. The site of Gladysvale in South Africa is excavated for Australopithecus remains.
Secession of the South, 1860–1861 Secession of the South, 1860–1861
Urban South Africa Urban South Africa
A sled having a certain initial speed on a horizontal surface comes to rest after traveling 10 ... A sled having a certain initial speed on a horizontal surface comes to rest after traveling 10 ...
Video: Chloroplast Structure & Light Dependent Reactions (Photosystem 1 and 2 Cyclic Electron Flow)

For a complete list of videos, visit our video library