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 116 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
Great answer, keep it coming :)

smrtceo

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

JILA's superradiant laser JILA's superradiant laser
Reactions 6–10: The Energy Generation Phase Reactions 6–10: The Energy Generation Phase
Comparison of energy consumption in developing and industrialized nations Comparison of energy consumption in developing and industrialized nations
Ocean Energy Ocean Energy
Palpating the posterior tibial pulse Palpating the posterior tibial pulse
Pulse–chase labeling evidence of bidirectional DNA replication in mammalian chromosomes Pulse–chase labeling evidence of bidirectional DNA replication in mammalian chromosomes
Video: Muscle Fatigue and Recovery

For a complete list of videos, visit our video library