Ask Question, Ask an Expert

+61-413 786 465

info@mywordsolution.com

Ask Physics Expert

Academics


Home >> Physics

One of the weapons considered for the "Star Wars" antimissile system is a laser that could destroy ballistic missiles. When a high-power laser is used in the Earth's atmosphere, the electric field can ionize the air, turning it into a conducting plasma that reflects the laser light. In dry air at 0°C and 1 atm, electric breakdown occurs for fields with amplitudes above about 2.97 MV/m.

(a) What laser beam intensity will produce such a field? W/m2

(b) At this maximum intensity, what power can be delivered in a cylindrical beam of diameter 5.10 mm?

Physics, Academics

  • Category:- Physics
  • Reference No.:- M9866593

Have any Question?


Related Questions in Physics

Atoms bond to atoms through their electrons the following

Atoms bond to atoms through their electrons the following analogy will be used to help us understand how this occurs. Imagine that the atoms of different elements are like kids coming to school. Each kid comes to school ...

Question suppose the emf generated by a coil rotating in a

Question: Suppose the emf generated by a coil rotating in a magnetic field is zero at t=0, and increases to its first peak at t0=0.11ms. A) What is the angular velocity of the coil in rad/s? B) At what time (relative to ...

Question small birds can migrate over long distances

Question: Small birds can migrate over long distances without feeding, storing energy mostly as fat rather than carbohydrate. (Figure 1) Fat is a good form of energy storage because it provides the most energy per unit m ...

Question suppose you have a fixed charge of -150 nc at

Question: Suppose you have a fixed charge of -15.0 nC at point X. Points A and B are to the right of point X at distances of 20.0 cm and 40.0 cm from X respectively. Calculate the following: a) the potential at points A ...

Question your roommate is working on his bicycle and has

Question: Your roommate is working on his bicycle and has the bike upside down. He spins the 62cm -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second. What is the pebble's sp ...

What are the equations and ratios used in galileos

What are the equations and ratios used in Galileo's experiments, and what theory/principles are associated with his experiments that involve motion on a ramp at different inclines and distances for example?

Question suppose we could shrink the earth without changing

Question: Suppose we could shrink the earth without changing its mass. At what fraction of its current radius would the free-fall acceleration at the surface be three times its present value? The response must be typed, ...

A bullet is shot straight up into air from ground it

A bullet is shot straight up into air from ground. It reaches maximum height = 757m. Calculate initial speed of bullet in m/s & using the results calculate total flight time t in seconds until the bullet reached the grou ...

Question an object of mass m is dropped from height h above

Question: An object of mass m is dropped from height h above a planet of mass M and radius R. Find an expression for the object's speed as it hits the ground. Express your answer in terms of the variables m,M,h,R and app ...

Question planets beyond the solar system on october 15 2001

Question: Planets beyond the solar system. On October 15, 2001, a planet was discovered orbiting around the star HD68988. Its orbital distance was measured to be 10.5 million kilometers from the center of the star, and i ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As

Follow Us

© Copyright 2013-14 mywordsolution.com All rights reserved