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Rina8888 [55]
3 years ago
8

Calculate the missing angles in the following diagram if the index of refraction is 1.00

Physics
1 answer:
defon3 years ago
4 0
Glad you are coming back tomorrow I am so happy to be with you guys I will
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Which would melt first, germanium with a melting point of 1210 k or gold with a melting point of 1064oc?
iren2701 [21]
<span>Germanium To determine which melts first, convert their melting temperatures so they're both expressed on same scale. It doesn't matter what scale you use, Kelvin, Celsius, of Fahrenheit. Just as long as it's the same scale for everything. Since we already have one substance expressed in Kelvin and since it's easy to convert from Celsius to Kelvin, I'll use Kelvin. So convert the melting point from Celsius to Kelvin for Gold by adding 273.15 1064 + 273.15 = 1337.15 K So Germanium melts at 1210K and Gold melts at 1337.15K. Germanium has the lower melting point, so it melts first.</span>
8 0
3 years ago
I need help it is due today
siniylev [52]

Answer:

Option 3. The tennis ball began from rest and rolls at a rate of 14.7 m/s safer 1.5 seconds.

Explanation:

To know the the correct answer to the question, it is important that we know the definition of acceleration.

Acceleration can simply be defined as the rate of change of velocity with time. Mathematically, it is expressed as:

a = (v – u) /t

Where

a => acceleration

v => final velocity

u => Initial velocity

t => time

With the above information in mind, let us consider the options given in the question above to know which conform to the difinition of acceleration.

For Option 1,

We were told that the tennis ball has the following:

Distance = 4 m

Time = 1.5 s

This talks about the speed and not the acceleration.

Speed = distance / time

For Option 2,

We were only told about the average speed and nothing else.

For Option 3,

We were told that the tennis ball have the following:

Initial velocity (u) = 0 m/s

Final velocity (v) = 14.7 m/s

Time = 1.5 s

This talks about the acceleration.

a = (v – u) /t

For Option 4,

We were only told that the tennis rolls to the right at an average speed. This talks about the average velocity. We need more information like time to justify the acceleration.

From the above illustrations, option 3 gives the correct answer to the question.

8 0
3 years ago
Your oven has a power rating of 5000 watts. How many kilowatts is this ?
Gekata [30.6K]

1,000 watts = 1 kilowatt
2,000 watts = 2 kilowatts
3,000 watts = 3 kilowatts
4,000 watts = 4 kilowatts
<em>5,000 watts = 5 kilowatts</em>

8 0
3 years ago
Nuclear fusion is more reliable and sustainable source of energy than nuclear fission chain reaction justify this statement with
nata0808 [166]

Answer:

1. Nuclear fusion does not generate radioactive nuclear wastes as nuclear fission does.

2. Nuclear fusion cannot lead to disastrous powerplant explosions as nuclear fission does.

3. More energy is generated during nuclear fusion than in nuclear fission.

Explanation:

Nuclear fusion involves the combination of lighter atoms such as hydrogen to form a heavier nucleus, in the process producing a tremendous amount of energy.

Nuclear fission on the other hand involves splitting a heavy nucleus into two lighter nuclei, releasing energy in the process.

  • Nuclear fusion can be more reliable than nuclear fission in energy generation due to the following reasons:
  • There are no radioactive waste products obtained as a result of nuclear fusion, unlike nuclear fission. This is because the elements involved in Nuclear fusion are relatively radioactively stable elements.
  • The risk of nuclear powerplant explosion due to out of control chain reactions is reduced in nuclear fusion because the reaction can only occur in perfect conditions under high pressure and temperatures <em>(e.g the sun)</em>. When any of these conditions is removed due to a fault, the reaction automatically stops.
  • More energy is generated during nuclear fusion than in nuclear fission.
4 0
2 years ago
To see her full heiht, a child that is 1 meter tall needs a mirror that is at least A) 033 m tall. 6) 050 m tall C) 075 m tall.
svlad2 [7]

Answer:

0.50 m tall

Explanation:

To see the full height of the child the height of the mirror should be half of the height of the child

As it id given that the height of the child is 1 meter so the height of the mirror is =\frac{height\ of\ child}{2}=\frac{1}{2}=0.5m

As it is a rule that to see the full any object the height of the mirror should be half of the height of the object

7 0
3 years ago
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