PHYSICS HIGH SCHOOL

In any one material, all electromagnetic waves have the samea. wavelength.
b. velocity.
c. frequency.
d. amplitude.

Answers

Answer 1
Answer:

Penn foster Students:  Velocity

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A growing person needs a diet that supplies about 10MJ of energy per day. Calculate the amount of energy supplied by such a diet each second, and hence the person’s average power. (Give your answer to the nearest 10W)
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When two objects collide the momentum of the system of the system stays constant . This is a statement of ____?Impulse A change in momentum Newton's Third Law The conservation of Momentum

What causes flaming combustion to occur?Select one:
a. A solid fuel mixes with an adequate amount of liquid fuel to be able to sustain an open burning flame.
b. A gaseous fuel mixes with an adequate amount of oxygen and heats to ignition temperature.
c. A solid fuel encounters an open flame and entrains enough air to ignite.
d. A gaseous fuel encounters an external heat source and experiences piloted ignition.

Answers

The option that is correct as regards flaming combustion from the question is A solid fuel mixes with an adequate amount of liquid fuel to be able to sustain an open burning flame.

  • Combustion can be regarded as exothermic redox chemical reaction  which occurs at high temperature between fuel as well as an oxidant.

  • This oxidant is  usually atmospheric oxygen, and the results are mixture of gases which do appear as smoke.

  • For this flaming combustion to occur, there should be mixture of solid fuel as well as liquid fuel so that the burning flame can be sustained.

  • Flaming combustion takes place when both visible flames as well as  plume of a fire are visible.

Therefore,  option A is correct.

Learn more at:

brainly.com/question/14177748?referrer=searchResults

Answer is A(Soild Fuil

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Jose has a solid green ball. Which color(s) of light does this ball reflect? A.
blue and yellow

B.
green

C.
all colors except green

D.
white

Answers

If the ball is green, then it is absorbing all the colors of light except green. This means that it is reflecting or denying the absorption of green light, that is why the ball is green. Therefore, your answer would be B.

Hope I helped :)

About 85% sure on this one. 
The ball reflects the green because the ball absorbs all the other colors except green so that's why its the green light is covering it and its absorbing everything else 

A fastball pitcher can throw a baseball at a speed of 40 m/s (90 mi/h). (a) Assuming the pitcher can release the ball 16.7 m from home plate so the ball is moving horizontally, how long does it take the ball to reach home plate? (b) How far does the ball drop between the pitcher’s hand and home plate?

Answers

Answer:

a) 0.4175 seconds

b) 0.854 m

Explanation:

t = Time taken

u = Initial velocity = 40 m/s in x direction

v = Final velocity

s = Displacement = 16.7 m

a = Acceleration due to gravity = 9.81 m/s²

a) Time = Distance / Speed

\text{Time}=(16.7)/(40)=0.4175\ s

Time taken by the ball to reach home plate is 0.4175 seconds

b)  Here velocity will by taken in y direction will be 0

s=ut+(1)/(2)at^2\n\Rightarrow s=0* 0.4175+(1)/(2)* 9.81* 0.4175^2\n\Rightarrow s=0.854\ m

The ball drops by 0.854 m between the pitcher’s hand and home plate.

Dark spots on the photosphere are known asA. the corona.
B. the chromosphere.
C. sunspots.
D. solar wind.

Answers

The dark spots that are found on the photosphere are called sunspots. These are a temporary phenomena and are areas of different temperature compared to the surroundings. Sunspots are at a lower temperature compared to the surrpundings and they are created due to magnetic field flux. They can stay on from a few days to a few months and eventually decay.

C is the right answer

Which are associated with nuclear fission but are not associated with nuclear fusion? Check all that apply. neutrons striking nuclei two small nuclei joining together the release of large amounts of energy a single large nucleus breaking apart two small nuclei forming

Answers

Answer:

neutrons striking nuclei

a single large nucleus breaking apart

two small nuclei forming

Explanation:

- Nuclear fission occurs when a large, unstable nucleus absorbs a slow-moving neutron and breaks apart into two smaller nuclei + additional neutrons. In the process, the mass of the final product is smaller than the mass of the initial nucleus, so this mass difference is converted into a large amount of energy, according to Einstein's equation:

E=\Delta m c^2

- Nuclear fusion occurs when two small nuclei join together forming a larger nucleus. In the process, the mass of the final nucleus is smaller than the sum of the masses of the initial nucleu, so this mass difference is converted into a large amount of energy, according to Einstein's equation:

E=\Delta m c^2


We can now analyze each statement and see which one is valid only for nuclear fission:

neutrons striking nuclei --> valid only for nuclear fission

two small nuclei joining together --> valid only for nuclear fusion

the release of large amounts of energy --> valid for both fission and fusion

a single large nucleus breaking apart --> valid only for nuclear fission

two small nuclei forming --> valid only for nuclear fission

Answer:

A, D, E

Edge. 2023

Explanation:

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Device that measures electric current

Answers

This device is called an ammeter.
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