PHYSICS MIDDLE SCHOOL

What are examples of devices that use electromagnetic waves

Answers

Answer 1
Answer: Here are a few quick examples:

AM radios
FM radios
TV sets
Garage door openers
TV remotes
Flashlights
Microwave ovens
Microwave radios
Your eyes
Police speed radars
GPS receivers
Cellphones
Smartphones
Cordless phones
X-ray machines
Cameras
CT scanners
MRI machines
Police radios
Ham radios
Car headlights
Weather radars
Bluetooth headphones
Space heaters
Campfires
LEDs
Lasers
Bassboat fish-finders
Weather satellites
TV satellites
Space probes

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HIGH SCHOOL

Arrange the balls in order from greatest amount of gravitational potential energy to least.

Answers

Size and weight doesn't matter, Galileo proved this.
All of them have the same potential energy 
MIDDLE SCHOOL

How much power does it take to move an object with a force of 200 Newton’s a distance of 25 meters and 10 seconds

Answers

Work = (force) x (distance)

Work = (200 N) x (25 m)

Work = 5,000 Joules

Power = (work done) / (time to do the work)

Power = (5,000 Joules) / (10 sec)

Power = 500 Joules/sec

Power = 500 watts

HIGH SCHOOL

Two balls are thrown straight up. the first ball is thrown with twice the initial speed of the second. ignore air resistance. how much higher will the first ball rise?]

Answers

Ball 1: h1=U^2/2g Uo=U
ball 2: h2=(2U)^2/2g
4U^2/2g
h2=4h1
COLLEGE

A particle is going into a nozzle at 10 m/s and then after 3m the particle is slowing down to 2 m/s. The particle travels through a straight path down the middle of the nozzle. How do you find average acceleration using eularian and then Lagrangian view point.

Answers

Answer:

Explanation:

As we know that the initial speed of the particle when it enters the nozzle is given as

after travelling the distance d = 3 m it will have its final speed as

now we know that when acceleration is constant the equation of kinematics is applicable

so we will have

COLLEGE

When ironing clothes, the primary method of heat transfer is

Answers

Conduction, since the iron is in direct contact with the clothes.
Heat transfer from a hot iron to a shirt during ironing is an example ofconduction
COLLEGE

The right-hand rule predicts the direction of the force on a positively charged object moving in a gravitational field true false

Answers

The statement above is FALSE.
The right hand rule is used in physics to predict the direction of the force on a charged object moving in a MAGNETIC FIELD. The right hand rule is used to relate the relationship between the magnetic field and the forces that are exerted on the moving objects in the field. Using the right hand rule, for a positively charged object that is moving in an electric field, the pointer finger will point in the direction the charged object is moving, the middle finger will point in the direction of the magnetic field and the thumb will point in the direction of the magnetic force that is pushing the charged object.

Answer:

False

Explanation:

The right-hand rule doesn't predicts the direction of the force on a positively charged object moving in a gravitational field true false

HIGH SCHOOL

What is the difference between linear motion and circular motion?

Answers

Answer:

Linear motion is a movement in a straight path, but circular motion is a motion in a circular path.

HIGH SCHOOL

PLEASE HELPPPPPP this is really important and I wanna understand it!! It's just too complicated for me... A physics student carries a model rocket from his car 150. m N along a sidewalk and 200. m E into a field to the launch site. He then launches the rocket to an altitude of 500. m. Find the rocket’s distance from the car when it reaches its highest altitude.

Answers

Answer:

559 m

Explanation:

You can use distance formula for 3 dimensions:

d = √((x₂ − x₁)² + (y₂ − y₁)² + (z₂ − z₁)²)

d = √(150² + 200² + 500²)

d ≈ 559

Answer:

700 is the answer i think

Explanation:

MIDDLE SCHOOL

Asteroids are larger than??

A- planets
B- the sun
C- stars
D- meteoroids

Answers

The answer would be meteoroids, as a meteoroid is a broken off piece of an asteroid. hope i helped :3
Asteroids are larger than meteoroids

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