PHYSICS HIGH SCHOOL

According to the information in your study unit, which of the following locations requires the highest illuminance? A. A residential stairway
B. A school locker room
C. A bank lobby
D. A study area

Answers

Answer 1
Answer: The correct answer is letter D. A study area. According to the information in your study unit, the location that requires the highest illuminance is the study room because it is the place the students can stay to study. The more brighter the place is, the more people are using that area.

Related Questions

Please help with number 5
Surgeons, engineers, carpenters, plumbers, electricians, and furniture movers all rely on trained experience with visual thinking. Describe how one of these tradespeople or someone in another occupation uses visual thinking in his or her work.
A failure of the red-sensitive nerves in the eye to respond to light properly causes A. astigmatism. B. farsightedness. C. chromatic aberration. D. color blindness.
What volume will a sample of copper 98.2 g occupy? the density of copper is 8.96 g/mL
Which of the following terms helps to describe an ecosystem?populationnichehabitatall of the above

Maria’s father started a fire in the fireplace. He crumpled some paper, lit a match, and soon the logs in the fireplace were burning. In this case, the stored chemical energy in the logs was changed intoA) electrical energy.
B) mechanical motion.
C) heat and light energy.
D) electrical and heat energy.

Answers

As per the question the crumpled paper was burnt .

When the paper was burnt,it produces light.One also feels the sensation of heat.

The electrical energy is due to the flow of electrons. Here no electronic motion takes place.Hence no electrical energy will be produced.

Mechanical energy is the sum total of kinetic and potential energy.The kinetic energy is the energy gained due to the motion of the body and potential energy is the energy gained due to the position or configuration of the body.

Hence from above,we can get that the correct answer to the question is-C] Heat and light energy.
It was changed into heat and light energy.

You put the wet leaves in the container and turn the crank to spin off the water. The radius of the container is 13.2 cm. When the cylinder is rotating at 1.63 revolutions per second, what is the magnitude of the centripetal acceleration at the outer wall?

Answers

Answer:

centripetal acceleration(a_(c))=13.8m/s^(2)

Explanation:

convert 1.63rev/sec to rpm by multiplying by 60

= 1.63*60=97.8rpm

Convert this to rad/sec

1rpm =π/30 rad/sec

97.8rpm = 97.8 * (π/30 rad/sec)

              =10.25rad/sec

linear velocity=  angular velocity *radius

radius =13.2cm=13.2/100=0.132m

v=rω

v= 0.132*10.25

v=1.35m/s

centripetal acceleration = (v^(2) )/(r)

a_(c)=(1.35^(2) )/(0.132)

a_(c)=13.8m/s^(2)

Answer:

a_(c) = 13.8 m/s².

Explanation:

The acceleration centripetal a_(c) is given by:

a_(c) = (v^(2))/(r)    (1)

where v: is the tangential speed and r: is the container radius

The tangential speed is equal to:

v = \omega \cdot r   (2)

where ω: is the angular velocity

Since 1 revolution is equal to 2π rad, the velocity (equation 2) is:

v = 1.63 (rev)/(s) \cdot (2\pi rad)/(1rev) \cdot 0.132m = 1.35m/s  

Now, by entering the velocity value calculated into equation (1) we can find the acceleration centripetal:

a_(c) = ((1.35m/s)^(2))/(0.132m) = 13.8m/s^(2)

I hope it helps you!    

A deep draught vessel sailing in a very narrow channel can develop a sudden sheer as it slows down. What could be the cause of this?

Answers

Final answer:

A deep draught vessel sailing in a narrow channel can experience a sudden sheer due to squat, which is the downward displacement caused by hydrodynamic forces in shallow water. This can lead to the ship sinking lower in water and potentially losing control. Ship operators should be aware of this phenomenon and take precautions when navigating in narrow channels.

Explanation:

A deep draught vessel sailing in a very narrow channel can develop a sudden sheer as it slows down due to the phenomenon called squat. Squat refers to the downward displacement of a ship caused by hydrodynamic forces when it is sailing in shallow water. As the vessel slows down, the decrease in speed leads to a decrease in the hydrodynamic forces supporting the ship, causing it to sink lower in the water and potentially lose control.



This sudden sheer can be dangerous as it can result in the ship deviating from its intended course and potentially colliding with the channel walls or disturbing other vessels in the vicinity.



It is important for ship operators to be aware of this phenomenon and take necessary precautions when navigating in narrow channels, such as maintaining a safe speed and keeping a proper distance from the channel walls.

Learn more about Squat here:

brainly.com/question/33257645

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Final answer:

A deep draught vessel sailing in a very narrow channel can develop a sudden sheer as it slows down due to the change in pressure caused by the narrowing of the channel.

Explanation:

A deep draught vessel sailing in a very narrow channel can develop a sudden sheer as it slows down due to the change in pressure caused by the narrowing of the channel. When the channel narrows, there is a pressure difference which results in a net force on the fluid. This net force causes the vessel to experience a sudden sheer as it slows down.

Learn more about sudden sheer in a narrow channel here:

brainly.com/question/32328650

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

Answers

That statement stands unique in its simple veracity and truthiness.

How does a water molecule transfer from the ocean to form part of a cloud in the atmosphere?A.
precipitation from the ocean and then evaporation into a cloud


B.
condensation from the ocean and then evaporation into a cloud


C.
precipitation from the ocean and then collection into a cloud


D.
evaporation from the ocean and then condensation into a cloud

Answers

The right answer for the question that is being asked and shown above is that: "B. condensation from the ocean and then evaporation into a cloud." a water molecule transfer from the ocean to form part of a cloud in the atmosphere is that condensation from the ocean and then evaporation into a cloud

Answer:

b

Explanation:

that to somebody who answered!

An engine raises 100kg of water through a height of 60m in 20s. what is the power of the engine​

Answers

Answer:

the answer is 3000

Explanation:

power=mass×gravity×height or (divided by /Time)

so 100kg×10×60m/20s

=60,000/20

=3000joule

if I am wrong correct me
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