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
Luda [366]
3 years ago
11

Why exactly do people use simple machines like a pulley

Physics
1 answer:
Komok [63]3 years ago
6 0
They can change the direction of force which can result in easier movement.
You might be interested in
Consider an electron confined in a region of nuclear dimensions (about 5 fm). Find its minimumpossible kinetic energy in MeV. Tr
BARSIC [14]

Answer:

39.40 MeV

Explanation:

<u>Determine the minimum possible Kinetic energy </u>

width of region = 5 fm

From Heisenberg's uncertainty relation below

ΔxΔp ≥ h/2 , where : 2Δx = 5fm ,  Δpc = hc/2Δx = 39.4 MeV

when we apply this values using the relativistic energy-momentum relation

E^2 = ( mc^2)^2 + ( pc )^2 = 39.4 MeV ( right answer ) because the energy grows quadratically in nonrelativistic approximation,

Also in a nuclear confinement ( E, P >> mc )

while The large value will portray a Non-relativistic limit  as calculated below

K = h^2 / 2ma^2 = 1.52 GeV

7 0
3 years ago
Are materials that dissolve in water hydrophobic or hydrophilic
stira [4]

Answer:

hydrophilic

Explanation:

hydrophobic means it hates water so a hydrophobic material would separate from the water and just sit there (an example of this is oil)

4 0
3 years ago
Read 2 more answers
Help please ASAP ONLY 1 question
Tasya [4]
C!! A brick to a house
5 0
3 years ago
HELP ME!!! I don't know if you can see the picture on the right or not..
gizmo_the_mogwai [7]
It’s an assortment of compound molecules
7 0
3 years ago
Read 2 more answers
How do you un rewrap something?
MAVERICK [17]
Wrap it back up……….
7 0
3 years ago
Other questions:
  • Which is the largest gas giant?
    7·1 answer
  • The rate at which energy is transferred
    8·2 answers
  • How many places are there for electrons in the innermost shell of an atom?
    14·1 answer
  • Hermal energy is a form of... A. Potential energy. B. Kinetic energy. C. Chemical energy.
    7·1 answer
  • The toxic effects of water pollution are generally
    13·1 answer
  • A rocket is launched from rest and moves in a straight line at 30.0 degrees above the horizontal with an acceleration of 35.0 m/
    13·1 answer
  • What is the relationship between atmospheric pressure and the density of gas particles in an area of decreasing pressure? (2 poi
    9·2 answers
  • _____reaches the Earth’s surface through ______, then turns into ______.
    5·1 answer
  • What does fitness means to you
    11·2 answers
  • Draw the symbol for the following components.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!