Asked by Lies

which scenario shows radiation

The air under a reading lamp is warmed

Eggs cook in a skillet

Eggs boil in a pot of water

Air warmed by a floor radiator rises to the top of a room, forcing cooler air downward
Answered by Lies
So which one is it
Answered by Lies
which scenario shows radiation?

A. The air under a reading lamp is warmed
B. Eggs cook in a skillet
C. Eggs boil in a pot of water
D. Air warmed by a floor radiator rises to the top of a room, forcing cooler air downward

Answered by Lies
A student want to use the equation for Coulomb's Law to calculate the electric force between two charges. Which shows all of the information she will need to preform the calculation.

Coulomb's constant, the distance between the charges

Coulomb's constant, both charges measured in Coulombs

Both charges measured in Coulombs, the distance between the charges

Coulomb's constant, both charges measured in Coulombs, and the distance between the charges


Answered by Lies
how do electromagnets cause a maglev train to levitate above the track

Batteries provide electric energy to the electromagnets int the train

Magnets in the sides of the tracks constantly repel and attract magnets in the sides of the train

Magnets in the track and magnets in the bottom of the train repel each other

Magnets in the track and magnets in the bottom of the train attract each other
Answered by Lies
what happens to sound waves from an object as it moves toward you (1 point)

A. The pitch gets lower because of an increase in wavelength
B. The pitch gets higher because of an increase in wavelength
C. The Pitch gets higher because of an increase in frequency
D. The pitch get lower because of an increase in frequency
Answered by Lies
which combination of frequencies would produce the lowest beat frequency?

A. 10 hz and 20 hz
B 500 Hz and 600 Hz
C 500 Hz and 501 Hz
D 10 Hz and 15 Hz
Answered by Lies
which statement about the effect of temperature on the speed of sound is correct

As temperature increases, the speed of sound increases because he medium becomes denser

Changes in temperature have no effect on the speed of sound

As temperature increases, the speed of sound decreases because molecules in the medium collide less frequently

As temperature increases, the speed of sound increases because molecules in the medium collide more frequently
Answered by Lies
which statement about the effect of temperature on the speed of sound is correct?

As temperature increase, the speed of sound increase because the medium become denser.

Changes in temperature have no effect on the speed o sound

As temperature increases, the speed of sound decreases because molecules in the medium collide less frequently.

As temperature increases, the speed of sound increases because molecules in the medium collide more frequently.
Answered by Lies
which forms of electromagnetic radiation are arranged in orderof increasing energy?

infrared, gamma rays, microwaves, ultraviolet

microwaves, ultraviolet, infrared, gamma rays

gamma rays, ultraviolet, microwaves, infrared

microwaves, infrared, ultraviolet, gamma rays


Answered by Lies
Is it :
A:infrared, gamma rays, microwaves, ultraviolet
B: gamma rays, ultraviolet, microwaves, infrared
C: microwaves, ultraviolet, infrared, gamma rays
D: microwaves, infrared, ultraviolet, gamma rays

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