PHYSICS HIGH SCHOOL

The si unit of work is called

Answers

Answer 1
Answer: The SI unit of work is known as the joule which is represented by J.

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Which one of the following sources produces the highest energy photons? A)a doctor's x-ray source B)a heat lamp in a restaurant C)a microwave oven D) gamma rays from a star radio E)waves from a local station

the length of time it takes a planet to revolve around the sun is equivalent to witch of the following?

Answers

it really depends on how far or close the planet is from the sun

Answer:

The length of its year.

Explanation:

When Earth completes a full rotation, a year has completed. So, the same can be the same for other orbiting planet. The moon for example takes  29.5 days to revolve around the Earth, so one moon year is   29.5 Earth days.

Which describes the changes in visible light moving from red to violet?

Answers


As you move from red to violet, the wavelength of the light waves
gets shorter, and the frequency gets higher.  Also, each photon
carries more energy as you move in that direction.  One photon
of violet light carries roughly twice as much energy as one photon
of red light does.

The Pangaea theory supports the theory of plate tectonics because _____.it is based on the idea that there were several land masses when Earth was first created
it is based on the idea that all the present continents were one supercontinent
it does not require scientists to support the notion that Earth's plates can move
one day, Earth will have one large land mass again

Answers

The Pangea theory supports the theory of plate tectonics because it is based on the idea that all the present continents were one super-continent. For reasons still unknown, the super-continent got separated and created separate smaller continents. This theory also supports the fact that this movement will continue until the day arrives when all the smaller continents will again merge in a different configuration to create another super-continent. 

Answer:

A

Explanation:

ITS RIGHT

Extremely high temperatures and pressures are necessary for fusion reactions to take place in stars. TRUE or FALSE.

Answers

The answer is true as a result of the fusion hydrogen atoms are converted into helium and energy is released in stars to produce fusion reaction. 
I think the answer is True

Transforme 0,4m em mm

Answers

1m = 1000 mm

0,4m = 0,4 * 1000 = 400mm

When compounds form, what is one result for the atoms that bonded?A. a stable arrangement of electrons

B. an unstable arrangement of electrons

C. more than eight electrons in their valence shell

D. fewer than eight electrons in their valence shell

Answers

One result for the atoms that bonded together when a compound forms is a stable arrangement of electrons.
When compounds form, the result for the atoms that are bonded is a stable arrangement of electrons. The answer is letter A. An unstable arrangement of electrons, more than eight electrons in their valence shell and fewer than eight electrons in their valence shell do not result in the bonding of atoms.
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Where is the water table located?A. Below the layer of bedrockB. Under the zone of saturationC. In the layer of bedrockD. At the top of the zone of saturation
Through which one of the following mediums is the velocity of a sound wave the greatest? A. LeadB. AirC. WaterD. Steel
Which of the following is not a possible effect of rising carbon dioxide levels on plants?