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
suter [353]
3 years ago
15

Contrast situations where work is done with different amounts of force to situations where no work is done such as standing stil

l???
Physics
1 answer:
uranmaximum [27]3 years ago
5 0
Picking up a sheet of paper . . . work done with small force
Picking up a glass of water . . . work done with moderate force
Picking up a huge boulder . . . work done with a great tremendous force
=================================
Standing still . . .
Holding your tongue out as far as it will go . . .
Holding your arm over your head for 3 days . . .
Holding a huge boulder motionless over your head . . .
Pushing on a brick wall . . .
Pushing as hard as you can against a truck with the wheels locked . . .
. . . . . No work done at all, because the force doesn't move through a distance.

<u>Work done = (force) times (distance)</u>

If the force doesn't move, then the distance is zero, and the work done is zero.
You might be interested in
The courtroom role that possesses the most discretion is?
KonstantinChe [14]
The role of the Prosecutor's
5 0
4 years ago
The transfer of energy by the movement of particles that are in contact with each other
jeka57 [31]

Answer: I belive that the Answer is C.) Conduction

Explanation:

3 0
3 years ago
Read 2 more answers
Four long parallel wires each carry 2.0 A in the same direction. They are parallel to the z-axis, and they pass through the corn
yarga [219]

Answer:

A

Explanation:

6 0
3 years ago
How is momentum conserved is a Newton's cradle when one steel ball hits the other
Vikentia [17]

Answer:

Newton's Cradle experiment perfectly demonstrates the law of conservation of momentum which states that in a closed system, momentum before the collision is equal to momentum after the collision of the system.

As the first ball swings in the air, it gains momentum. When it strikes the second ball, it loses momentum and second ball gains equal amount of momentum. The second ball transfers the momentum to third, then fourth and till the last. The last ball when gains the same momentum swings up in the air. This continues. This experiment is done in drag free condition. This means there is no loss of momentum or opposing forces present.


4 0
3 years ago
The construction of a flat rectangular roof (6.17 m × 5.92 m) allows it to withstand a maximum net outward force of 2.00 × 104 N
Blababa [14]

Answer:

v_2=29.13\ m/s

Explanation:

It is given that,

Dimension of the rectangular roof, (6.17 m × 5.92 m)

The maximum net outward force, F=2\times 10^4\ N

The density of air, \rho=1.29\ kg/m^3

The Bernoulli equation is used to find wind speed of this roof blow outward. It is given by :

P_1+\dfrac{1}{2}\rho v_1^2=P_2+\dfrac{1}{2}\rho v_2^2

Here, v_1=0 (since air inside the roof is not moving)

v_2=\sqrt{\dfrac{2(P_1-P_2)}{\rho}}

Since, F=(P_1-P_2)A

v_2=\sqrt{\dfrac{2F}{\rho A}}

v_2=\sqrt{\dfrac{2\times 2\times 10^4}{1.29\times 6.17\times 5.92 }}

v_2=29.13\ m/s

So, the wind speed of  this roof blow outward is 29.13 m/s. Hence, this is the required solution.

5 0
4 years ago
Other questions:
  • An ideal gas system undergoes an isovolumetric process in which it expands and does 20 J of work on it's environment. How much e
    6·1 answer
  • Issac and Blaise decide to race. They both start at the same position at the same time. Issac runs at 2m/s but decides to take a
    9·1 answer
  • A load of 5.0N stretches a spring by 10cm the relaxed length is 40cm assuming that the proportional length is not exceeded deter
    11·1 answer
  • State the Independence of motion
    10·1 answer
  • A student is watching a video in order to understand how convection in the mantle of the Earth occurs. The video shows rock risi
    10·1 answer
  • HELP I WILL MARK AS BRAINLIEST!
    11·1 answer
  • If a bullet with a mass of 0.005kg is fired from a
    11·1 answer
  • boat travels through a river at a speed of 25 m/s, passing through schools and opening the soundtrack. One student measured freq
    13·1 answer
  • A machine whose efficiency is 75% is used to lift a load of 100m.calculate the effort put into the machine if it has a velocity
    12·1 answer
  • The moving charge in the wire causes the compass to deflect; this is because
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!