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Bezzdna [24]
4 years ago
11

What is another name for a "causal loop"?

Physics
2 answers:
OleMash [197]4 years ago
8 0
B I believe but hey we also have Google to double check
zvonat [6]4 years ago
4 0
<span>The Bootstrap Paradox.
To quote Doctor Who's explanation of it-
</span>
<span>"So there's this man, he has a time machine. Up and down history he goes, zip, zip, zip, zip, zip, getting into scrapes. Another thing he has is a a passion for the works of Ludwig van Beethoven. And one day he thinks, 'What's the point of having a time machine if you don't get to meet your heroes?' So off he goes to 18th century Germany, but he can't find Beethoven anywhere. No one's heard of him. Not even his family have any idea who the time traveller is talking about. Beethoven literally... doesn't exist. This didn't happen by the way. I've met Beethoven. Nice chap, very intense.
</span>
<span>Loved an arm wrestle. No, this is called the 'bootstrap paradox'. Google it. The time traveller panics. He can't bear the thought of a world without the music of Beethoven. Luckily he brought all of his Beethoven sheet music for Ludwig to sign. So he copies out all the concertos and the symphonies, and he gets them published. He becomes Beethoven. And history continues with barely a feather ruffled. But my question is this - who put those notes and phrases together? Who really composed Beethoven's 5th?"</span>
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How are gamma rays and microwaves similar
kompoz [17]

They are both electromagnetic waves

Explanation:

Electromagnetic waves are waves consisting of periodic oscillations of electric and magnetic fields. The fields oscillate in a plane perpendicular to the direction of motion the wave, so they are transverse waves.

Electromagnetic waves are the only type of waves able to travel in a vacuum. All electromagnetic waves travel in a vacuum at the same speed, known as the speed of light, equal to:

c=3.0\cdot 10^8 m/s

Electromagnetic waves are divided into 7 different types, depending on their wavelength and frequency. From the shortest to the longest wavelength (and so, from highest to lowest frequency, since frequency is inversely proportional to wavelength), we have:

Gamma rays

X rays

Ultraviolet

Visible light

Infrared radiation

Microwaves

Radio waves

So as we can see, both gamma rays and microwaves are types of electromagnetic waves. The difference between them is their different wavelength/frequency: in fact, the wavelength of gamma rays is extremently short (), while microwaves have longer wavelengths (at the order of the centimeter).

Learn more about electromagnetic waves:

brainly.com/question/9184100

brainly.com/question/12450147

#LearnwithBrainly

7 0
4 years ago
A bus travels 300 km south along a straight path with an average velocity of 85 km/h to the south. The bus stops for 22 minutes.
Kruka [31]

a) Answer;

= 6.72 hours

Explanation and solution;

velocity = distance over time  

Since we know the velocity and the distance, we can simply calculate time  

For the first part  

85 km/h = 300km / time  

time = 3.53 hours  

Then there is a 22 min stop, which is the same as 0.37 hours  

so far the trip is:  

3.53 + 0.37 = 3.9 hours  

then for the last stretch:  

78 km/h = 220 km / time  

time = 2.82 hours  

So the total trip is:  

3.9 + 2.82  = 6.72 hours

b) Answer;  

=  77.38 km/hr

Explanation and solution;

we take the total distance divided by the total time to get the average.  

total distance = 300 km + 220 km = 520 km  

total time = 6.72 hours  

Average velocity = 520 km / 6.72 hours =  77.38 km/hr


5 0
3 years ago
Peter throws a snowball at his car parked in the driveway. The snowball disintegrates as it hits the car. By Newton’s third law,
elena55 [62]
Well, they are equal and opposite, but the force is high enough to break up the snowball.  That is where the energy is dissipated.
3 0
3 years ago
Niels bohr said that electrons can only be a certain energy?
noname [10]
Yes and that the orbital paths were also fixed.
5 0
3 years ago
Read 2 more answers
Froghopper insects have a typical mass of around 11.1 mg 11.1 mg and can jump to a height of 55.3 cm. 55.3 cm. The takeoff veloc
Molodets [167]

Answer:

a = 2710m/s²

Explanation:

See attachment below.

4 0
3 years ago
Read 2 more answers
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