1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mr_godi [17]
3 years ago
7

When a high-power laser is used in the Earth's atmosphere, the electric field associated with the laser beam 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 3.00 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 3.44 mm?
W

Physics
1 answer:
Marianna [84]3 years ago
4 0

Find the below attachment

You might be interested in
A 57 kg wagon is pulled with a constant net force of 38 N. Calculate the acceleration of the wagon. F = ma
Dahasolnce [82]

Answer:

<h2>0.67 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

f is the force

m is the mass

From the question we have

a =  \frac{38}{57} =  \frac{2}{3}   \\  = 0.666666...

We have the final answer as

<h3>0.67 m/s²</h3>

Hope this helps you

4 0
3 years ago
Which of the following should you always use to protect yourself from hazardous moving parts of power tools and equipment
Andrew [12]
What are the following answers?
7 0
3 years ago
Use the drop-down menus to complete the statement about Earth’s magnetism.
Nataly [62]

Answer:

The Earth's magnetism is generated in the core, which is composed of iron that is constantly churning

Explanation:

Magnetic fields are produced by charges in motion, therefore by currents.

The outer core of the Earth consists mainly of melted iron that is in constant motion. This iron in motion actually acts as a giant current, and therefore it is responsible for the creation of the Earth's magnetic field.

The magnetic field of the Earth is very weak, in fact its magnitude is on average between 25 and 65 microtesla (for comparison, normal magnets can even produce magnetic fields of a few millitesla).

However, its role is very important for the Earth: in fact, it provides a shield that blocks most of the harmful radiation coming from the Sun.

5 0
3 years ago
Read 2 more answers
A coil with 55 loops has its flux change from 0 Wb to 0.0266 Wb in a certain amount of time, generating 5.22 V of EMF. How much
Eduardwww [97]

Answer:

0.280 s

Explanation:

I set it up as 5.22=(55)(0.0266)/x and then solved for x to be 2.80.

4 0
3 years ago
It is just as difficult to accelerate a car on a level horizontal surface on the Moon as it is here on Earth because
Citrus2011 [14]

Answer:

Mass of the car is independent of gravity

Explanation:

Here, we want to state the reason why even though we have the acceleration due to gravity absent on the moon, it is still difficult to accelerate a car on a level horizontal level on the moon.

The answer to this is that the mass of the car that we want to accelerate is independent of gravity.

Had it been that gravity has an effect on the mass of the said car, then we might conclude that it will not be difficult to accelerate the car on a horizontal surface on the moon.

But due to the fact that gravity has no effect on the mass of the car to be accelerated, then the problem we have on earth with accelerating the car is the same problem we will have on the moon if we try to accelerate the car on a horizontal level surface.

4 0
3 years ago
Other questions:
  • Your pet snake would be found in which kingdom:
    11·1 answer
  • Which uses motion of water in nature to produce electricity?
    8·1 answer
  • How does an object move when it is subject to a steady centripetal force
    10·1 answer
  • A thin, light wire 75.2 cm long having a circular cross section 0.560 mm in diameter has a 25.2 kg weight attached to it, causin
    15·1 answer
  • Why does the hood of a car heat up after the car has been running for a while? A) According to the fourth law of thermodynamics,
    11·2 answers
  • some fuel cells are powered by hydrogen. scientists are looking into the decomposition of water (h2o) to make hydrogen fuel with
    10·2 answers
  • If two or more elements are involved in a chemical reaction they will most likely form a?
    9·2 answers
  • Which of the following is not true about minerals?
    14·2 answers
  • In addition to the sources of error mentioned above, since the caliper jaws squeezed the flexible, rubber surface of the ball sl
    15·1 answer
  • A lightbulb has a power rating of 6.75 W and draws a current of 0.75 A when connected to a battery.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!