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
kondor19780726 [428]
3 years ago
9

In order for work to take place the energy present must be related to the movement of the object.

Physics
1 answer:
kaheart [24]3 years ago
5 0

This is another one of those muddy misleading questions, followed by
a muddy group of choices from which an answer must be selected.

a).  is absurd.  There's no such thing as a "balanced force", only
a balanced group of forces.

b).  is probably the choice the question is aiming for.

c).  is not so.  The engines of an airplane do plenty of work lifting the plane
off the ground, although the force of the engines is never directed upward.

d).  is really awkward.  The object's motion is almost never the cause of the force.
The force is almost always the cause of the object's motion.

Now for the big 800-lb gorilla in the room:  No moving object needs to be involved
in order for energy to be flowing or work to be getting done.

-- A radio wave radiates through space.  Straighten out a wire coat-hanger and
stick it up in the air where the radio wave can pass by it.  Electrical current flows
through the wire, and you can drain the electrical energy out the bottom of it.  

-- A light bulb is shining.  Some distance away, something it's shining on
gets warm, because of the heat energy that has shot across to it from the
light bulb and soaked into it.

-- A lightning bolt jumps from the ground to a passing cloud.  Or, if you feel
more comfortable with it, a lightning bolt jumps from a cloud to the ground.
It doesn't matter.  Either way, there's enough energy splashing around to
ignite houses, zap TVs and computers, melt concrete, vaporize water, and
light up a city.  Although nothing is moving.

You might be interested in
Compare the pressure exerted by the liquid at points A, B and C. Justify your answer
zzz [600]

Answer:

Pressure is equal in A, B, C and D

Explanation:

Pressure does not depends on the shape of the container

Pressure acting all direction

5 0
3 years ago
An alternating current is set up in an LRC circuit.
Andreyy89

Answer:

(B) Resistor only

Explanation:

Alternating Current: These are currents that changes periodically with time.

An LRC  Ac circuit is an AC circuit that contains a Resistor, a capacitor and an inductor, connected in series.

In a purely resistive circuit, current and voltage are in phase.

In a purely capacitive circuit, the current leads  the voltage by π/2

In a purely inductive circuit, the current lags the voltage by π/2.

Therefore when a alternating current is set up in LRC circuit, in the resistor, the current and the voltage are in phase.

The right option is (B) Resistor only.

7 0
3 years ago
How ocean currents effect temperature and the amount of moisture of the air mass above coastlines
GarryVolchara [31]
Hotter ocean tempatures mean more moisture in the dense air mass
8 0
3 years ago
****PLEASE HELP**** WILL MARK BRAINLIEST
allochka39001 [22]

Answer:

The Current decreases

Explanation:

HOPE THIS HELPS!

4 0
2 years ago
Where do people get their energy to turn a wheel??
Vesna [10]

Answer:

from food eaten (i.e contain carnlbohyadrates)

5 0
3 years ago
Other questions:
  • A squirrel runs at a steady rate of 0.51 m/s in a circular path around a tree. If the squirrel's centripetal acceleration is 0.4
    8·2 answers
  • How much work is done when a hoist lifts a 290-kg rock to a height of 7 m?
    8·1 answer
  • Determine how potential and kinetic energy changes at each position of the pendulum as the ball swings from A to E. Position A:
    10·2 answers
  • The Mariana Trench is the deepest ocean trench on. This trench occurs at a plante boundary where
    8·1 answer
  • A variable is defined as anything that
    7·1 answer
  • A 79 kg person sits on a 3.7 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.3 cm in diameter
    8·1 answer
  • One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching the f
    5·1 answer
  • What does a resistor in an electrical dp
    12·1 answer
  • 1. Objects become electrically charged as a result of the transfer of
    14·1 answer
  • Alex is conducting an experiment to find the specific heat capacity of water. She finds that 90 kJ were needed to raise the temp
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!