PHYSICS HIGH SCHOOL

Which particle would produce a magnetic field?(1) a neutral particle moving in a straight line
(2) a neutral particle moving in a circle
(3) a stationary charged particle
(4) a moving charged particle

Answers

Answer 1
Answer:

Answer: The correct answer is "a moving charged particle".

Explanation:

If the current flowing in the conductor then there is magnetic field around the wire which can be detected by the compass needle.

Here, the flow of charges which are negatively charged electrons produces the magnetic field. The flow of charges constitutes the electric current.

If there is no flow of the charged particles then there is no magnetic field produce. To produce magnetic field, it is necessary that charged particle must move.

From the given options, a moving charged particle would produce a magnetic field.

Therefore, the correct option is (4).
Answer 2
Answer: Neutral particles and stationary charged particles
don't produce magnetic fields. 

Charged particles in motion do.

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Where is the field of each charge the strongest ?(A. positive charge arrows pointed out) (B.negative charge arrows pointed inward)
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A rock hits the ground with a speed of 7 m/s and a kinetic energy of 100 J. What is the rock's mass?

The major contribution of the French philosopher Rene Descartes was in the realm ofa. physics.
b. chemistry.
c. astronomy.
d. epistemology.

Answers

The correct answer (d.) epistemology. The major contribution of the French philosopher Rene Descartes was in the realm of epistemology. Epistemology is the theory of knowledge, including methods, validity, and its scope. It could also be concluded to separate justified fact from an opinion.
The answer is epistemology. So d epistemology.

When two notes are played simultaneously creating a discordant sound, it is called ______

Answers

Dissonance.............

What are the uses of Electricity in our every day life?

Answers

Calling
Heating Food
Going on the internet
Video Games 
Weather
Heating up pools 

A 1200 kg car starts from rest and travels 100m in a time of 10 seconds . A) what is the acceleration of the car? B) what force must have acted on the car during this time? C) what is the velocity of the car after 10 seconds? D) what work was done on the car? E) what minimum power did the engine produce?

Answers

Given:
Mass (m) = 1200 kg
Distance (s) = 100 m
Time (t) = 10 seconds
Now,
velocity (v) = (distance)/(time)

                         = (100~ m)/(10~seconds)

                         = 10 m/s
Note that this one is the final velocity.
We also know that, 
initial velocity (u) = 0 m/s .......because the car starts from rest.
Now,
acceleration (a)= (change~in~velocity)/(time)

                               = (v-u)/(t)

                               = (10-0)/(10)

                               = 1 m/s²
Now,
Force (F) = mass (m) * acceleration (a)
                = 1200 kg * 1 m/s²
                = 1200 kg.m/s²
                = 1200 N
Now,
Work Done (W) = Force (F) * displacement (s) ....note that displacement is                                                                                                      same as distance.
                          = 1200 N * 100 m
                          = 120000 N.m
                          = 120000 J
Now,
Power (P) = (Work~done(W))/(time(t))

                 = (120000~J)/(10s)

                 = 12000 J/s
                 = 12000 watt
SO,
 A) The acceleration of the car is 1 m/s².
 B) 1200 Newton (N) force must have acted on the car.
 C) The velocity of the car after 10 seconds is 10 m/s.
 D) 120000 Joule (J) work was done on the car.
 E) The engine produced a minimum power of 12000 watt.

Coal _____. is a renewable resource can easily be replenished is formed from plant remains is the least-polluting energy source

Answers


Coal . . . . .

-- is a renewable resource that can easily be replenished.
   It happens by itself, and you don't even need to do anything,
   but it takes several million years.

-- Is formed from plant remains, and

-- is perhaps the MOST polluting energy source.

There is only supposed to be one answer choice, so the correct answer is is formed from plant remains.

Which of these features is NOT found on the ocean floor?A. mountain
B. volcano
C. river
D. plain

Answers


The one feature that is not found on the ocean floor is a river. A river and an ocean would not be found together, even on the ocean floor.

  ↑   ↑   ↑    Hope this helps! :D
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