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
timofeeve [1]
3 years ago
8

Joe leans against a lamppost with a force of 200 N. The lamppost does not move. How much work does he do?

Physics
1 answer:
hoa [83]3 years ago
6 0

Answer:

No work

Explanation:

He is not moving the lamppost as the lamppost cannot move to begin with.

You might be interested in
How are metals identified i the periodic table??
zaharov [31]

Answer:

okay here is a thing I learned when I was younger in my middle school:

Explanation:

my teacher would tell me that metals are considered a weak metals are on the left side and the good metals are located on the right side because the only way I remembered was the right means it is really strong and the left is weak and not that supportive. but I think that's how I still think it is or other people may have their own opinions. but hope this helped out with your question!

8 0
3 years ago
Read 2 more answers
A very powerful vacuum cleaner which has a hose of circular cross section can lift a brick of mass 12 kg when the hose is placed
valkas [14]

Answer:

A). 1.9 cm

Explanation:

m = Mass of brick = 12 kg

g = Acceleration due to gravity = 9.81 m/s²

r = Radius of hose

A = Area = \pi r^2

F = Force = mg

Let us assume that the pressure required to lift the brick would be atmospheric pressure

P=\dfrac{F}{A}\\\Rightarrow P=\dfrac{F}{\pi r^2}\\\Rightarrow r=\sqrt{\dfrac{F}{\pi P}}\\\Rightarrow r=\sqrt{\dfrac{12\times 9.81}{\pi\times 101325}}\\\Rightarrow r=0.01923\ m=1.9\ cm

The radius of the hose should be 1.9 cm

6 0
3 years ago
In the Sun, fusion reactions create helium nuclei. To form each helium
seraphim [82]
D is the answer. Bc the pointy
6 0
3 years ago
Read 2 more answers
What formula is used to calculate resistance using the color code?
jolli1 [7]
<span><em>The answer is </em><em>A</em><em> :</em><em>" R = (First digit * 10 + second digit) * multiplier. "

</em>
<em>yw peasant XD</em><em>
</em>
</span>
5 0
3 years ago
A projectile is fired directly upward from the ground with an initial velocity of 112 f/sec its distance s above the ground afte
Travka [436]

Answer:

3.48 seconds

Explanation:

At maximum height Vf=0 m/s

Vf= Vi - g*t

⇒g*t= Vi

⇒t= Vi/g

⇒t= 112/32.17 sec

⇒ t= 3.48 s

so the projectile will achieve its maximum height in 3.48 seconds.

7 0
3 years ago
Other questions:
  • A chemist identifies compounds by identifying bright lines in their spectra. She does so by heating the compounds until they glo
    7·1 answer
  • What is a dependent or responding variable? Can someone help me?
    7·1 answer
  • Will mark as BRAINLIEST.....
    11·1 answer
  • When the current in a coil flows in anti-clockwise direction, what pole does it create?​
    10·1 answer
  • Suppose Earth's mass increased but Earth's diame-
    14·1 answer
  • A strand of 10 lights is plugged into an outlet. How can you determine if the lights are connected in series or paralle
    7·1 answer
  • Gravitational potential entergy is related to​
    8·2 answers
  • It is desired to lay off certain horizontal distances for building layouts. The length of the tapes are not 100.00 ft. Determine
    14·1 answer
  • How can doing work on an object increase its kinetic energy?
    9·1 answer
  • Know the 4 types of communication skills describe each​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!