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 149 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?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Cyanide works by making the human body unable to use oxygen.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Chemosynthesis-based community on the East Pacific Rise. Chemosynthesis-based community on the East Pacific Rise.
Maps are important tools in political science as they help us see relationships between politics and Maps are important tools in political science as they help us see relationships between politics and
A depiction of slaves on a South Carolina plantation, around 1790. Likely of Yoruba descent, they pl A depiction of slaves on a South Carolina plantation, around 1790. Likely of Yoruba descent, they pl
The rapid collapse of the South Vietnamese army in 1975 caught many by surprise. Evacuees formed a ... The rapid collapse of the South Vietnamese army in 1975 caught many by surprise. Evacuees formed a ...
Until the 1960s, the South’s public facilities were segregated. Some were reserved for whites, ... Until the 1960s, the South’s public facilities were segregated. Some were reserved for whites, ...
The North and South Equatorial Currents The North and South Equatorial Currents
Video: Photosynthesis overview Animation

For a complete list of videos, visit our video library