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

Author Question: A 7.5 1014 Hz laser emits a 7.7-s pulse, 5.0 mm in diameter, with a beam energy density of 0.51 ... (Read 58 times)

nramada

  • Hero Member
  • *****
  • Posts: 580
on: Jul 29, 2018
A 7.5  1014 Hz laser emits a 7.7-s pulse, 5.0 mm in diameter, with a beam energy density of 0.51 J/m3.
 
  What is the amplitude of the electric field of the emitted waves? (c = 3.00  108 m/s, 0 = 4  10-7 T  m/A, 0 = 8.85  10-12 C2/N  m2)
  A) 120 kV/m B) 340 kV/m C) 480 kV/m D) 240 kV/m E) 150 kV/m

Question 2

A child is trying to throw a ball over a fence. She gives the ball an initial speed of 8.0 m/s at an angle of 40 above the horizontal. The ball leaves her hand 1.0 m above the ground and the fence is 2.0 m high.
 
  The ball just clears the fence while still traveling upwards and experiences no significant air resistance. How far is the child from the fence? A) 0.73 m
  B) 1.6 m
  C) 2.7 m
  D) 3.8 m
  E) 7.5 m
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

courtney_bruh

  • Sr. Member
  • ****
  • Posts: 308
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


nramada

  • Member
  • Posts: 580
Reply 2 on: Jul 29, 2018
Wow, this really help

ryansturges

  • Member
  • Posts: 338
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Relative Energy Consumption per Person for Selected Countries Relative Energy Consumption per Person for Selected Countries
Attributes of Major Energy Channels According to Traditional Chinese Medicine Attributes of Major Energy Channels According to Traditional Chinese Medicine
Demonstration of mRNA by pulse-labeling and sedimentation Demonstration of mRNA by pulse-labeling and sedimentation
Energy Transfer Energy Transfer
Energy Transfer Energy Transfer
Energy and Energy Units Energy and Energy Units
Video: Hormonal feedback loop components & Glucagon (glycogenolysis and gluconeogenesis)

For a complete list of videos, visit our video library