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
borishaifa [10]
3 years ago
13

Two objects of masses m1 = 0.56 kg and m2 = 0.88 kg are placed on a horizontal

Physics
1 answer:
ziro4ka [17]3 years ago
3 0

Explanation:

Stern et al. (1999) and Stern (2000), define this variable as those general visions about the world, reflected in the beliefs that people express about their relationship with the environment and nature.हेलो फ्रेंड्स मारो किसी को इनबॉक्स कैसे करें

You might be interested in
According to Charles’s law, when the temperature of a gas increases at constant pressure its a. volume increases. b. mass increa
xxMikexx [17]
The answer is A, the volume increases.
hope this helps
8 0
3 years ago
Why are some animals and plants can become pests when introduced into Australia
Yanka [14]
<span>Plants there are a lot. Australian plants are extremely hardy an have adapted to grow in conditions others have not. So when taken outside of Australia they do very, very well. Animals, less so. But there are a few very interesting cases.

</span>
8 0
3 years ago
How much does a 60 kg table weigh
soldier1979 [14.2K]

Answer:

588 N

Explanation:

weigh = Mg

I hope you got that. Thanks and upovote that

5 0
3 years ago
Lasers are classified according to the eye-damage danger they pose. Class 2 lasers, including many laser pointers, produce visib
Alexus [3.1K]

Answer:

<em>a) 318.2 W/m^2</em>

<em>b) 2.5 x 10^-4 J</em>

<em>c) 1.55 x 10^-8 v/m</em>

<em></em>

Explanation:

Power of laser P = 1 mW = 1 x 10^-3 W

exposure time t = 250 ms = 250 x 10^-3 s

If beam diameter = 2 mm = 2 x 10^-3 m

then

cross-sectional area of beam A = \pi d^{2} /4 = (3.142 x (2*10^{-3} )^{2})/4

A = 3.142 x 10^-6 m^2

a) Intensity I = P/A

where P is the power of the laser

A is the cros-sectional area of the beam

I = ( 1 x 10^-3)/(3.142 x 10^-6) = <em>318.2 W/m^2</em>

<em></em>

b) Total energy delivered E = Pt

where P is the power of the beam

t is the exposure time

E = 1 x 10^-3 x 250 x 10^-3 = <em>2.5 x 10^-4 J</em>

<em></em>

c) The peak electric field is given as

E = \sqrt{2I/ce_{0} }

where I is the intensity of the beam

E is the electric field

c is the speed of light = 3 x 10^8 m/s

e_{0} = 8.85 x 10^9 m kg s^-2 A^-2

E = \sqrt{2*318.2/3*10^8*8.85*10^9}  = <em>1.55 x 10^-8 v/m</em>

6 0
3 years ago
6. Explain the difference between a neutral atom and an ion?
Deffense [45]

Answer:

a neutral atom doesn't have a charge and an ion does.

Explanation:

When atoms bond they can gain or lose electrons which gives them a charge.

anion = negatively charged ion

cation = positively charged ion

8 0
3 years ago
Other questions:
  • What happens to the heat energy the particles receive during convection and conduction?
    10·1 answer
  • How could you show the effect that gravity has on you? Name 2 ways and explain how they would show that gravity affects you.
    12·1 answer
  • if a 10kg object is lifted a distance of 10m from the rest what was the final velocity of the object?
    6·1 answer
  • Question points)
    11·1 answer
  • A child in danger of drowning in a river is being carried down-stream by a current that flows uniformly with a speed of 2.20 m/s
    10·1 answer
  • A mass is hung from a spring and set in motion so that it oscillates continually up and down. The velocity v of the weight at ti
    9·1 answer
  • Which of the following explains the transfer of heat between two objects? A. flow of temperature from one object to the other B.
    7·1 answer
  • Describe the type of energy transfers that occur in photosynthesis
    12·1 answer
  • Pls help me ASAP it is for a final I dont understanddddd<br> Real help
    5·2 answers
  • Why is using fossil fuels considered unsustainable?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!