Why does a pencil in a glass container filled with water appear to be bent?A. reflection

B. refraction

C. diffraction

D. interference

E. transmission

Answers

Answer 1

Answer:
The phenomenon is called "refraction". It's the process of
light waves bending toward a different direction when they
cross a boundary between different media ... in this case,
from water into air.

Your brain doesn't know that the light waves bent toward a
new direction when they came out of the water into the air,
so your brain locates the bottom half of the pencil just like it
ALWAYS does ... in the direction the light waves are coming FROM.

Answer 2

Answer: the answer is B.refraction. when light refract under water the pencil can appear to bent

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Where in the laboratory is long, unrestrained hair most likely to be a safety concern?
Objects that are closer together have a stronger force of gravity between them.True False
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An engineer in India (standard household voltage = 220 volts) is designing a transformer for use on herupcoming trip to Canada (standard household voltage = 120 volts). If her input coil has 240 turns, how many
turns should her output coil have?

Answers

he should a step-up transformer with k=220/120=1.83 so output coil must have 240*1.83=440 turns

What is antoine lavoisier conservation of mass equation

Answers

Answer:

the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.

Explanation:

The antoine lavoiser conservation of mass equation can be equal to the mass of the element

If my final exam is worth 30% and my class average is 80, what do I need to get to pass the exam?

Answers

You haven't told us what the passing percentage is on the exam,
or what the passing percentage is for the semester, or any of that.

Mt. Everest is 29,028 feet high. How many miles is this?

Answers

mount. everest is 5.499 miles

1 mile = 5280 foot

Thus, miles = 29028/ 5280
= 5.49 miles. (approx)

Thus, mount everest is 5.49 miles high.

How far does light travel in 1 millisecond that is, in one hundredth of a scecond?

Answers

First of all, we have to convert the time into seconds:
$t=1 ms=0.001 s$
Light travels at speed of $v=3\cdot 10^8 m/s$ .
The distance covered by the light during this time can be found with the formula
$v= (S)/(t)$
where S is the distance covered and t the time. By re-arranging this formula and by plugging the numbers into it, we find how far the light went in 1 millisecond:
$S=vt=(3\cdot 10^8)(0.001 s)=3 \cdot 10^5 m.$

Final answer:

The speed of light is approximately 299,792 kilometers (186,282 miles) per second. Given a millisecond is a thousandth of a second, light will travel approximately 299.792 kilometers in one millisecond.

Explanation:

The speed of light in a vacuum, such as outer space, is a set constant in physics, approximately 299,792 kilometers per second, or about 186,282 miles per second. Thus, if we want to know how far light travels in 1 millisecond, that is, one hundredth of a scecond, we need to convert seconds into milliseconds.

There are 1,000 milliseconds in one second. Hence, in 1 millisecond, light will travel about 299.792 kilometers (or about 186.282 miles).

Learn more about Speed of Light here:

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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.

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Solid substances can exist in more than one form. A.True B.False

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